Infosec Person

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Kevin Mitnick

Security Consultant, Public Speaker, & Author Whistling ICBM launch codes since 1988
60,148 followers |

Steven Levy

I'm writing as fast as I can.
42,851 followers |

Eugene Kaspersky

Chairman and CEO of Kaspersky Lab. Waging war against malware for 23 years. #Infosec, #cybercrime, #cyberwar. Scuderia Ferrari F1 fan. Tweets are my own.
38,716 followers |

Danger Room

Noah Shachtman, Spencer Ackerman, and WIRED's national security dorks.
34,966 followers |

Rachel Sterne

Chief Digital Officer at @nycgov. @ me with your ideas for tech and city government.
33,318 followers |

Mikko Hypponen

CRO at F-Secure. Malware Adventurer. World Champion in Xevious.
29,509 followers |

Craig Fugate

FEMA Administrator
23,251 followers |

HD Moore

CSO of Rapid7 and Chief Architect of Metasploit
22,186 followers |

Darren Kitchen

Host, producer and founder of the online web series Hak5.
19,366 followers |

Schneier Blog

Bruce Schneier is an internationally renowned security technologist and author. Described by The Economist as a "security guru"
17,890 followers |

Graham Cluley

Naked Security chap at Sophos. Viruses, spam, computer security, that kind of stuff. Named 'Twitter user of the year' by Computer Weekly in 2009 and 2010.
17,342 followers |

Hak5

Hak5 isn’t your typical tech show. Damn the warranties, it’s time to Trust your Technolust. Follow the hosts here: @hak5darren & @snubs
17,212 followers |

Thom VanHorn

VP of Marketing for Application Security, Inc., The Leader in Database Security, Risk, & Compliance - - Owner of Artists+Authors Rare Books, Fine Art
16,423 followers |

Rod Beckstrom

CEO-Catalyst/Starfish&Spider Co-author/CyberSecurity/ex-Fed/YPO/ICANN
16,418 followers |

Tony Bradley

Technology and information security writer, and author of the PCWorld Net Work blog and magazine column.
15,446 followers |

Christopher Soghoian

Security and Privacy Researcher
12,401 followers |

Moxie Marlinspike

11,711 followers |

snipe ツ

Ethical hacker, open sorcerer, author, speaker, devops chick, gamer, sarcastigeek, scuba diver, chaotic neutral, blacksmith, crimefighter, ENTP, NSFW, 学習者
11,208 followers |

David Chalk

Dr. (d.Tec), Authority on Cyber Defence Technology,Live Audit, MasterMind Group-click link and scroll down to my Name
11,202 followers |

Dino A. Dai Zovi

Co-Founder and CTO at Trail of Bits, Inc.
10,769 followers |

Angela Orebaugh 

Technology & Cybersecurity Fellow/Author/Speaker/Social Media & Mobile Security/Wireshark/GreenTech/Investor/Adventurer/Rollergirl
10,638 followers |

Jart Armin

I walk around feeling a sort of existential guilt all the time; and honestly for me the internet is a way of feeling less guilty about the universe
10,431 followers |

[Christofer] Hoff

Fitness Culturist. Paleo-like Eater. Shiraz & Bourbon Fiend. Brazilian Jiu Jitsu Fanatic. Technosopher. Cloud & Virt (Security) Dude. I work @ Juniper Networks
9,526 followers |

MarcoFigueroa

Security Researcher, Developer, Speaker, Author, Hacking is my passion
9,389 followers |

Chris Gates

Security Guy. You guys are really f**king up my zen thing. blog: carnal0wnage.attackresearch.com
8,440 followers |

securitypro2009

Information Security Pro, Compliance visionary, Entrepreneur, World Traveler, and Business Management Techophile.
8,392 followers |

Jack Daniel

Sporadic Blogger, Security BSides co-founder, InfoSec Curmudgeon, Reluctant CISSP, Tenable Product Manager, Amateur Blacksmith, BS Artiste Extraordinaire, more
8,213 followers |

RSnake

http://sla.ckers.org/
7,935 followers |

Daniel Compton

I work as a professional penetration tester. www.commonexploits.com is there to share knowledge and tools with other security professionals in the industry.
7,808 followers |

d3v1l

Security Engineer at http://www.randomstorm.com
6,719 followers |

Dejan Kosutic

Expert for information security management (ISO 27001 standard) and business continuity management (BS 25999-2 standard)
6,709 followers |

Lee

Blogging about internet security whilst supporting Liverpool Football Club.
6,615 followers |

Tavis Ormandy

This is a personal stream, opinions expressed are mine.
6,283 followers |

egyp7

Metasploit core developer/OSS project manager.
6,129 followers |

Didier Stevens

5-to-9 security researcher and Microsoft MVP. Mostly IT security. And programming. And (hardware) hacking. And PDF. Avatar: http://bit.ly/bP0Gy0
6,096 followers |

Dancho Danchev

Independent Cyber Threats Analyst, OSINT/Cyber CI Analyst, ZDNet.com Blogger, Security Blogger at Webroot
5,925 followers |

Security Humor

Official Cyb*rsecurity Jester. Your access here is protected by the United Nations as an inhuman right.
5,746 followers |

Sam Bowne

I teach Ethical Hacking at City College San Francisco. My statements are my own, not official positions of CCSF.
5,438 followers |

Bruce Schneier RSS

5,189 followers |

alexander knorr

infosec, security, privacy, linux, opensource, networks, tcp/ip, programming, scripting, apple, windows,
5,018 followers |

Webroot

The fastest, lightest, most-effective security -- Currently on Twitter-duty: Lisa and Cat
4,968 followers |

Jason Haddix

Director of Penetration Testing @ HP && Father. My tweets and website are my own views and not that of my employer.
4,888 followers |

Joshua J. Drake

Accuvant Research Consultant and CSAW CTF Judge. Security Researcher, Developer, and former Skateboarder/BBoy
4,870 followers |

Mandeep Khera

Security, Big Data, Log Management
4,857 followers |

Roberto Martinez

Security Professional | Malware Researcher at Global Research and Analysis Team - Kaspersky Lab | Latam - Mexico
4,840 followers |

Chester W - Sophos

Sophos Security expert Chet Wisniewski shares advice and insights into online threats
4,777 followers |

Jack Martin

Pops of 4. Dad of 3, Husband of 1. Defender of Good.
4,676 followers |

Rafal Los

Security Evangelist at HP Software. I blog, podcast, speak and think -http://podcast.wh1t3rabbit.net Remember: Security is NOT a hat trick!
4,649 followers |

Rebecca Herold

Infosec, privacy, & laws compliance, professor, fun momzy, author. I love: family, friends, science, art, math, music, nature, cicadas, palindromes, running
4,618 followers |

Martin McKeay

Blogger, podcaster, QSA and security twit. Talking about Security since 2004 My opinions are my own and do not reflect those of my employer.
4,577 followers |

Window Snyder

Security Blah Blah Blah
4,538 followers |

Joshua Corman

Security Strategist/Intellectually Honest Ex-Analyst/Zombie Killer/Co-Founder of Rugged ruggedsoftware.org / Statements are mine & may not reflect Akamai's
4,401 followers |

Matt Suiche

Hacker, Microsoft Enterprise Security MVP, @MoonSols, Hackito Ergo Sum
4,333 followers |

David Reynolds

IT pro (CEH, MCSE/MCSA, CWNA, to name a few), Business Professional, Enjoying Life!
4,177 followers |

James Arlen

Infosec Geek, Hacker, Social Activist, Author, Speaker, Parent.
4,081 followers |

indi303 & lizborden

The horsemen of the Security Apok bring the first no BS InfoSec Show.
4,049 followers |

malc0de

Owner of malc0de.com which provides an updated database of malicious domains/IPs hosting executables.
3,821 followers |

Chris Eng

VP Research at Veracode. Dad. Amateur photographer. Berkeley graduate. Long-suffering Cal sports fan. Rabble rouser. ISTJ.
3,712 followers |

Jonathan Brossard

CEO and Security Researcher at Toucan System. Co-organizer of the Hackito Ergo Sum Conference.
3,701 followers |

Shahin Ramezany

Multipurpose hacker , so called security researcher
3,692 followers |

jruffer

Ethical Hacker, Social Media Geek, EvilTwin Attacker My goal is to help others learn the dark side of social media so they can protect themselves or companies.
3,624 followers |

Open Malware

Open Malware Project by GTISC
3,622 followers |

George Kurtz

President & CEO CrowdStrike, Former CEO of Foundstone, Former CTO of McAfee, and Co-Author of Hacking Exposed
3,618 followers |

A. Hacker

A GUI for Metasploit that allows red team collaboration.
3,584 followers |

Dan Wallace

Twitter's Most Trusted Source for Information Security, Privacy & Compliance Insight
3,472 followers |

Zach Lanier

Professional Computer Jerk.
3,375 followers |

Mike Rothman

Securosis Analyst. Security industry veteran. I say what you are thinking. Author of Pragmatic CSO.
3,355 followers |

BillBrenner70

Security scribe, family man
3,348 followers |

Space Rogue

140 Characters for a bio? really? http://www.spacerogue.net/wordpress/?page_id=49
3,320 followers |

Joe Burton

The computer and network forensic training professionals.
3,312 followers |

JadedSecurity

Penetration Specialist, Blogger, Podcaster (co-host ISDPodcast) and the #DontClickShit Guy...
3,166 followers |

Aaron Portnoy

Just another brainworker.
3,092 followers |

Andy Ellis

Akamai CSO, Parent, Bostonian, Oenophile, Patriots Fan, personal stylist, FCSP, FiveFinger runner. Tweets my own.
3,070 followers |

Chris Ensey

Director of Government Security Solutions, SafeNet Inc. Here to learn, collaborate and connect. Tweets are my own opinion and not that of my employer.
3,051 followers |

Dan Guido

Co-Founder and CEO of Trail of Bits, Hacker in Residence at NYU-Poly.
3,012 followers |

Ralf (RPW)

cryptanalyst, RCE, likes to break stuff
2,979 followers |

Barnaby Jack

2,952 followers |

Raf

I tweet about [IT] Security, privacy, politics, hockey, cars, current events...whatever! Oh, and I'm totally NSFW. **Opinions are entirely my own, period.
2,941 followers |

Dan Tentler

Penetration Tester / Tinkerer / Photographer / Gentleman of Fortune
2,849 followers |

riskybusiness

The Twitter feed of Patrick Gray, presenter of the Risky Business security podcast...
2,811 followers |

Josh Abraham

Security Researcher and Perl Guru. NOT the headset corporation
2,802 followers |

Darin Andersen

GM North America & Global VP Strategic Alliances and OEM | Norman Data Defense Systems | Cybersecurity Professional | Triathlete in Training
2,705 followers |

Rik Ferguson

Director Security Research @ Trend Micro - I tweet as myself, expect some non security stuff too.
2,684 followers |

Theresa Payton

Passionate About Security and Educating Others On How to be More Secure
2,608 followers |

Tom Field

Editorial Director of Information Security Media Group -- the source for business/security insights.
2,599 followers |

Nicolas Brulez

Senior Virus Researcher @Kaspersky lab / Co-Author of the Armadillo protection system. Reverse Engineering Rockstar #CannibalCorpse fan. Tweets are my own
2,573 followers |

Tracy Kitten

BankInfoSecurity.com is a leading site dedicated to security news and fraud trends impacting the financial space.
2,567 followers |

Nico Waisman

I would prefer not to. I once overdrink Ben Nagy.
2,543 followers |

Costin Raiu

AntiVirus expert at Kaspersky Lab, freethinker, casual developer, architect, photographer, editor and a bit of everything.
2,539 followers |

Tiffany Strauchs Rad

Computer hacker, professor, and lawyer.
2,537 followers |

Steven

Security researcher/Malware researcher, Temari fan ♥
2,509 followers |

danielkennedy74

Cognoscenti de securitas.FinCo CISO now Research Director for Information Security/Networking @451Research.Blawger @PraetorianPref.Opinions are mine alone.
2,455 followers |

Philip Hall

SME in mobility, cloud, end-user technology & security. Expertise in security as a business enabler, BYO-D, MDM, NAC, & related adoption strategies.
2,447 followers |

Cross Site

Web 2.0wned
2,440 followers |

jcran

Security automation, Metasploit, QA, Ruby
2,438 followers |

Colin Percival

Computer Scientist & FreeBSD Security Officer
2,417 followers |

John Matherly

2,410 followers |

Ben Tomhave

infosec obsessive
2,392 followers |

Michael Howard

A security guy @ MSFT GT: X509Cert
2,369 followers |

Alex Ionescu

Windows Internals Expert, Security Ninja, and Embedded ARM Kernel Guru.
2,326 followers |

sinn3r

Metasploit Dev, Exploit-DB, Corelan Security. Pwns and giggles. 79c5a2ec291ba4eab7aa4aaa04e2b504
2,320 followers |

Paul Hortop

IT Security for New Zealand
2,318 followers |

ryanlrussell

Computer security, writing and FireEye. But mostly I tweet about my kids.
2,301 followers |

Luis Corrons

A bit of geek, a bit of freak, and PandaLabs Technical Director. WildList reporter. AMTSO Board of Directors. And a bunch of other things :)
2,289 followers |

Apneet Jolly

Hacker, Photographer and Social Butterfly. I spend each day learning, growing, and improving myself. Also #antiaging #cryonics #rockclimbing #smartdrugs #paleo
2,289 followers |

Matt Johansen

Head of the Threat Research Center at WhiteHat Security (@whitehatsec), #blogger ( @liquidmatrix & mattjay.com), #Volleyball player, (-:|3
2,249 followers |

Christien Rioux

Chief Scientist & Co-Founder of Veracode. Partner at SOURCE Conference. L0phT/cDc/207/617. crioux on Chess.com and ICC
2,249 followers |

Peter Vreugdenhil

ZDI
2,232 followers |

David Maynor

CTO of Errata Security, wireless hacker, gun fan
2,150 followers |

David Barroso

Mr. Wolfe. I'm Winston Wolfe. I solve problems
2,134 followers |

eSecurityPlanet

eSecurity Planet is the IT professional's top choice for Internet security news and analysis, technical tutorials, product reviews, and buying guides.
2,117 followers |

StephenNorthcut

Married 25 years, Christian, geek,manager, fun loving curious, read and write a lot
2,110 followers |

Jim Denaro

InfoSec and crypto patent expert. Founder of CipherLaw. Tweeting patents and cybersecurity.
2,104 followers |

GarWarner

UAB Computer Forensics, Cybercrime investigations, Spam & Phishing Research,
2,101 followers |

craigbalding

'I'd rather be paranoid and wrong than ignorant, happy, and right' (SN) Director, Red Team @ F500 My views here, not my employer
2,058 followers |

Javvad Malik

The unholy alliance between information security, cynicism, videos and comedy personified in a short fat person. www.youtube.com/infoseccynic
2,044 followers |

J Wolfgang Goerlich

Information Systems and Information Security Manager. Regular InfoSec practitioner, occasional speaker and writer. INTJ. #MiSec, #BSidesDetroit, #CSA, #Owasp.
2,042 followers |

Texiwill

VMware Communities Guru and Moderator, Author of "VMware vSphere and Virtual Infrastructure Security"
2,040 followers |

Scott Crawford

Polymath, pundit, airhead (AMEL, CFII). Research Director, Security and Risk, Enterprise Management Associates (EMA)
2,031 followers |

Frank Breedijk

Security Officer of Schuberg Philis, Author of Seccubus, Blogger for CupFighter.net, Father, Husband
2,018 followers |

rogueclown

hacker. chicagoan. woman. student of information security. musician. geek.
1,968 followers |

B.K. DeLong

Dad. InfoSec & Risk Management Researcher. Online Community Builder. Professional Networker. Futurist. Muse, Friend and Listener. I speak for myself.
1,956 followers |

shellprompt

I work for a security vendor.
1,952 followers |

Thomas Roessler

Web standards geek, with a day job at W3C and an interest in the Web Foundation: Security, privacy, linked data, eGov. Also, ICANN.
1,949 followers |

Stefan Tanase

Senior Security Researcher at Kaspersky Lab. Financial markets enthusiast. Visual arts and electronic music fan. Mother tongue tweeting on @stefantRO
1,943 followers |

Rodrigo (Sp0oKeR)

#IronNerds that work with Security Research that loves pcap analysis, intrusion detection, malwares analysis and Beers . #Ironman wannabe and #twittersrun
1,935 followers |

Pedro Bueno

Information Security Professional, SANS Institute Internet Storm Center Incident Handler, Security and Malware Researcher
1,926 followers |

Nick Owen

Nick Owen, CEO of WiKID Systems, Opensource Two-factor Authentication. These tweets are my own, just like my company (well, 50%). BsidesAtlanta co-organizer.
1,915 followers |

Matthijs R. Koot

IT-engineering, privacy, cyberwar, democracy. Former PhD-student at University of Amsterdam (2007-2011). RT ≠ endorsement. Please correct me when I'm wrong!
1,911 followers |

haroon meer

Security Geek..
1,874 followers |

Steve Werby

UTSA Information Security Officer. Hacker. Virginia Tech fan/grad. Craft beer lover. @eduinfosec puppeteer. Downtown San Antonio resident (ex Richmond, VA)
1,872 followers |

Matt Neely

Security researcher, penetration tester and host of the Security Justice Podcast.
1,865 followers |

Steven Fox, CISSP

I am a Security Architect at the U.S. Dept of the Treasury & Penetration Tester. I also serve on the board of the Detroit ISSA chapter.
1,856 followers |

Brennan Tom

Improvise, Adapt and Overcome
1,824 followers |

Georgia Weidman

Pentester, security researcher, speaker, trainer, photographer, videographer, sometimes podcaster.
1,777 followers |

Tracy Kitten

Tracy Kitten is a managing editor for BankInfoSecurity.com, a media site dedicated to news and views on information security, risk management and privacy.
1,773 followers |

keydet89

DFIR Windows nerd, beer snob, mud/O-course runner, Tough Mudder alum
1,760 followers |

Brent Dirks

Web managing editor for @secprods, @occhealthsafety, @eponline. Senior iOS reporter for @appadvice.
1,740 followers |

cedricpernet

Incident Handler/Cybercrime & Forensic Investigator. Also, addicted to guitar playing \m/ :-)
1,732 followers |

Rodrigo Branco

1,726 followers |

David Schekaiban

hacker en @codigoverde
1,721 followers |

Iftach Ian Amit

Hacker, executive and general trouble maker/seeker/solver. My views are my own, and may or may not be endorsed by my corporate identity @ioactive
1,704 followers |

Aviv Raff

CTO, Seculert
1,655 followers |

Jonathan Abolins

Info security, OSINT, and languages geek w/ biology & physics background researching the networked world.
1,638 followers |

Nathan Hamiel

InfoSec Professional, Artist, and Thinker. I mess with stuff and sometimes it breaks.
1,632 followers |

InfoSecurity Points

News and Ideas on Information Security, Privacy, Computer History, and related policies issues. Disclaimer: Links & Retweets do not imply content endorsement.
1,595 followers |

Dmitri Alperovitch

Co-Founder & CTO at CrowdStrike; CounterTack, Board Member; Senior Fellow at Atlantic Council
1,588 followers |

Stephen Fewer

Independent Security Consultant
1,580 followers |

Sandro Gauci

voip/webapp/network security; mostly harmless
1,579 followers |

Max Moser

1,572 followers |

ghostnomad

Reformed auditor turned Infosec guy, blogger, Tech Haiku, budding author, IT risk (yes I am a risk), CISA, game maker, husband and father
1,562 followers |

Chris Morton

Information Security Engineering Manager with Motorola Solutions.
1,526 followers |

Brad Arkin

Engineering Senior Director at Adobe Systems
1,504 followers |

Joe Stewart

Director of Malware Research, SecureWorks Counter Threat Unit
1,496 followers |

Dinis Cruz

Web Application security consultant. #O2Platform main developer - http://www.o2platform.com
1,478 followers |

کیوان کمیلی پور

ISMS Lead Auditor, Malware Researcher
1,474 followers |

Jozef

Computer Security Engineer, Cyber warrior, Critical thinker haxor of networks, infosec, Virus & malware. @ DEFCON
1,422 followers |

Tim

InfoSec, Malware Analysis, Digital Forensics, Cigar Geek
1,398 followers |

James Baker

Security Architect, Cloud security, InfoSec, InfoSec did I mention InfoSec. Living the Dream!!!
1,395 followers |

Andreas Schuster

Computer forensic geek
1,362 followers |

Rocky DeStefano

Insane guy who found a mission within the Information Security field again (Visible Risk).
1,333 followers |

L. Brent Huston

So, I'm one of these infosec folks. I break things. I reverse things. I make chaos out of order. I do a lot of stuff that starts with the letter s. :)
1,330 followers |

James Blake

Runs HP's EMEA Security Operations Consulting practice, Security B-Sides London Co-Founder, surfer, heavy metal fan, Belgian beer aficionado & Harley rider.
1,325 followers |

Doug Burks

Christian, husband, father, Security Onion author, SANS GSE and Community Instructor, Network Security Monitoring enthusiast
1,323 followers |

Jack Mannino

Mobile and web security guy, and CEO of nVisium Security Inc.
1,315 followers |

Info Security Jerk

I want to educate you about information security, but I'm not going to sugarcoat it. You make risky decisions and need some tough love.
1,314 followers |

Eddie Schwartz

CSO, RSA, The Security Division of EMC.
1,309 followers |

Gunter Ollmann

Security researcher, consultant, tinkerer, skeptic and cynic of many things. Apparently I can exude a subtle sarcasm that baffles Americans.
1,297 followers |

David Harley

Anti-malware researcher/author
1,248 followers |

abuse.ch

A swiss guy fighting Cybercrime
1,247 followers |

georgestarcher

Forensics, Information Security, MacOSX fan.
1,245 followers |

Tom Haney

Security transcends technology. #infosec Part rain maker, part marketer, part technologist.
1,245 followers |

Dan Sherman

Interests in information security, cyberwar, hacking, pentesting, social engineering, psychology, DIY and practitioner of Ving Tsun.
1,238 followers |

Caleb Sima

1,234 followers |

UBERSEC Jacob

#infosec, CISSP, GCFA Cyber Security Professional, Cod3r, Digital Forensics Analyst, Network Administrator and Information System Security guru.
1,223 followers |

Dimitri McKay

Blogger from NYC area who talks about technology, compliance, network & cloud security. I'm also an MMA fighter, a zombie killer & lover of glazed donuts.
1,217 followers |

CoderW3X

Network Systems Engineer, Pentester.
1,212 followers |

Yuri Diogenes

CISSP, CASP, E|CEH, E|CSA, Security+, Senior Technical Writer at Microsoft Windows ITPRO Security Team, former Senior SEE at MS Forefront Edge Team
1,207 followers |

Drazen Drazic

MD, Securus Global
1,203 followers |

Maximiliano Soler

Security Researcher & Enthusiast. FireCAT | OWASP Mantra | #ToolsWatch | #EKOParty Fan
1,202 followers |

Joseph Sokoly

InfoSec dude, Gamer, Rabblerouser, Bassist, and Husband
1,195 followers |

Lance Spitzner

My passion is learning how to better secure people in todays information age, and share those lessons with others.
1,187 followers |

Richard Johnson

Vulnerability Research, Mitigation Design, and Security Visualization
1,180 followers |

Yesid Gonzalez

Security Analyst Consultant. E|NSA, C|EH, C|HFI, E|CSA/L|PT I Love The Technology, the Computer Security and Polygraph. LawSchool Student. Security Researcher.
1,175 followers |

Mike_Mimoso

Editorial Director, Security Media, TechTarget
1,156 followers |

Justin Foster

Sr. Architect for Trend Micro focusing on Virt/CloudSec
1,152 followers |

Dillon Beresford

Security Researcher
1,138 followers |

Matt (Jeong Wook) Oh

Creator of DarunGrim project and a security researcher at a giant corporate. No employer opinions are reflected on my tweets.
1,137 followers |

Howard J. Anderson

Executive editor of www.HealthcareInfoSecurity.com, a Web site on information security and risk management in healthcare
1,134 followers |

Brian Baskin

A sonic fusion of Digital Forensics, Incident Response, with a dash of malware analysis and a dollop of Video Game Addiction.
1,134 followers |

Michael R. Farnum

InfoSec person who loves God, family, books, and the Dallas Cowboys. Founder of @HouSecCon, Security Advocate for @Accuvant. These are MY opinions
1,129 followers |

Andrew Case

digital forensics, computer security, and a few other things
1,092 followers |

Scott J Roberts

intelligentsia in training, network security ninja, pancake visionary, mixtape master, failed fashionista
1,079 followers |

Dennis Thibodeaux

Security pro, CISSP, CISM, Microsoft Certified Trainer, broadcaster-in-exile. History doesn't always repeat itself, but it usually rhymes.
1,065 followers |

Edson Kowask

Governance, Strategic Intelligence e Innovation in Information Security. Research Smart Grids e Cloud computing. Campinas / SP - Brasil
1,053 followers |

jen_h

.* w/soft spots for QA, infosec, open source, voice-activated mobile, cloud computing, books & comics, @HeyTell! Co-founder @Voxilate, a (truly) mobile startup.
1,041 followers |

Exploit Sweatshop

We make discount 0day for you! Have many flavor!
1,040 followers |

Rick Ivey

Information Security Professional & Educator. Client Satisfaction & Learning Most Important
1,039 followers |

Rohit Srivastwa

Founder of ClubHack, Security Evangelist, Technologist, Blogger, Hacker, Biker, Nomad, Farmer and a big time Comic Freak ;)
1,034 followers |

Kevin Long

Investigative response/forensics, data recovery, Mac security, and risk analysis at Verizon Cybertrust Security.
1,019 followers |

Dave Ockwell-Jenner

Oh hai! I'm an information security geek. All your systems are belong to me. Kthxbai. Some time DJ and producer.
1,006 followers |

Michael Montecillo

Security Professional/Analyst/Researcher/Forensic Investigator and business strategist. None of my thoughts here reflect those of my employer and yada yada yada
1,005 followers |

Chris Burton

Husband, Foodie, FISMA and NIST Compliance Specialist, Author of RedSpartan
994 followers |

Kees Leune

Information Security Officer, Strategist, Professor, Mentor, Adviser, Consultant, Speaker and occasional developer. Blog at http://www.leune.org.
933 followers |

Andrew G. Allen

Information Security Evangelist, Technologist, and Internet Junkie.... views expressed are my own :)
931 followers |

prakash

Security,Tech Tips,Hacking,black hat seo,gaming,virus,worms,exploits
909 followers |

Chris Harrington

Infosec geek....security blogger....APT hunter...and other things probably not relevant :)
907 followers |

John Walker

MD, Consultant, Researcher, Visiting Professor-Science & Technology, and Freelance Author working within the spectrum of Cyber Security.
880 followers |

Wils Bell

Security Headhunter / Recruiter. Tweets on Security Jobs, Breaches, Infosec News and more. Cycling Enthusiast! Profile :http://www.linkedin.com/in/wilsbell
880 followers |

Tom Stamulis

InfoSec Professional, Mac fan, Gadget collector, Big Red Sox and Pats fan!
875 followers |

cryptorobert

Editorial Director at Black Hat. Former Director of the Computer Security Institute. Bit of a geek.
839 followers |

SilverstoneA

Cyber Security / Global Security
837 followers |

Mick Douglas

I like information security. How about you?
816 followers |

Ryan Barnett

Senior Security Researcher with Trustwave's SpiderLabs, WASC Member/Web Hacking Incident Database Project Leader, OWASP ModSecurity CRS Project Leader
804 followers |

John Viega

Author of Building Secure Software, Myths of Security, OpenSSL book, ...
775 followers |

jeff bryner

security dweeb, operator of p0wnlabs.com and creator of kinectasploit.
766 followers |

Armando Romeo

IT(alian) Security guy, founder of HackersCenter.com
757 followers |

Peter Gregory, CCISO

Passion to help others improve their lives: best selling tech author of 32 books on security, speaker, univ instructor, motorcycle ridercoach. Opinions mine.
754 followers |

Benjamin Wright

SANS law training | attorney | privacy, spying, e-discovery, e-commerce, cyber defense, hidden camera, computer investigation, forensics, subpoena
753 followers |

Chris Christianson

northern california, mgr network security, SANS Community Instructor
742 followers |

diocyde

Walks in Darkness, Bathed in Light. Explorer of Offensive Information Warfare Thought Memes, Destruction of Hostile Infrastructures.
741 followers |

Sebastien Raveau

I play chess when I'm drunk
720 followers |

Joe Klein

IPv6 Security Researcher, Hiker, Hacker & Photographer, Soon to be Marathon runner
712 followers |

Eyal Estrin

Information Security Expert, CISSP, CISA, CEH, Security+, MCSE:Security, MCITP:Enterprise Admin, CCNA http://il.linkedin.com/in/eyalestrin
699 followers |

Hor/\drim

Analyzing malware/ Digital Forensics/ Figuring out possible attack vectors
696 followers |

Jorge Orchilles

Focused on Information Security and IT. Mostly offensive security and Windows 7 (author of Microsoft Windows 7 Administrator's Reference).
687 followers |

Mark Brooks

Information Security Executive - Blade Runner wannabe.
669 followers |

Ismael Valenzuela

Passionate about Information Security, Principal Architect at McAfee Foundstone Services and Community SANS Instructor for Forensics & IDS Tracks
654 followers |

Dale M. Rapp

Technology Project Manager & IT Security Officer. Husband, and father of 8 and 10 year old daughters. CISSP into wireless security, studying for CWNA/CWSP.
654 followers |

Edward Smiley

Infosec Geek
642 followers |

Michael Sudduth

Memphis ISSA President | InfoSec Engineer | Security Awareness | OWASP | Ethical Hacker | Lockpicker  | Social Engineer | Memphis Tiger Basketball fan
641 followers |

Ramki B Ramakrishnan

IT Pro, Security Enthusiast...
625 followers |

Jason Mueller

621 followers |

Infosec Padawan

Infosec warrior in training
606 followers |

whitewolfsec

598 followers |

Tim Dafoe

I'm a Canadian information security professional looking to share and learn.
591 followers |

Daniel Cid

CTO at Sucuri, OSSEC Founder, open source developer, information security professional - http://sucuri.net
575 followers |

Richard Zhao

PhD, CISSP, Chief Strategy Officer, NSFocus,Cloud, Security, Telecom, P2P, China
573 followers |

Leon Ward

UK - Network Security Alchemist - Working for Sourcefire
559 followers |

David Langlands

Network/Security Architect. Former C[I,S,T]O. Eternal student of the packet. I speak only for @zerodave, and even then, mostly poorly.
548 followers |

Jack Maynard

InfoSec pro, CISSP, CRISC, CCSK, C|EH. Member IAPP & EFF. A privacy, information security and social networks microblog.
536 followers |

Nitesh Dhanjani

531 followers |

John Pirc

Author/Security researcher/evangelist, dedicated father/husband, H20 sports and world traveler...
530 followers |

James Shewmaker

www.netwars.info
525 followers |

Mac_Lovin

Computer Forensics, specializing in Macs. Teach Mac forensics to LEOs & corp examiners. Adjunct faculty in the computer forensics program at a local college.
525 followers |

jclausing

512 followers |

Phil Calvin

Infosec, cyclist, runner, motorcyclist, street food fanatic. Back in Boulder again.
506 followers |

Steven Adair

498 followers |

James Tarala

CyberSecurity Consultant & IS Auditor with Enclave Security. Senior SANS Instructor & Audit Curriculum Author.
497 followers |

Sean Morrissey 

Mac & iPhone Author, Speaker, & Software Developer
494 followers |

Matteo Cavallini

Manager @ CERT of the Italian Ministry of Economy / VP of CSA-Italy / Blogger. Tweeting about cybersecurity, cloud security and cyberwarfare
492 followers |

Ben Chai

Security Professional
487 followers |

Anders Reed-Mohn

InfoSec advisor, loves sailing, acoustic guitars and the great people in my life. I tweet my own mind, not my employer's
487 followers |

ben miller

I formed and led an information security ops and response team for six years. Now I'm doing other things. I help run Charmsec, too.
487 followers |

Claudio J. Lacayo

Global Security Operations at Citigroup. Views are my own.
484 followers |

Eric Conrad

SANS Certified Instructor, lead author of The CISSP Study Guide, GIAC GSE #13
479 followers |

Erik Peterson

Application Security Weapons Manufacturer. Director of Product Strategy for Veracode. INTJ.
460 followers |

Olabode Olaoke

Ethical Hacker, Infosec & IT Service Management Consultant, Infosec & ITIL Trainer, Project Manager, Passionate about good governance in Nigeria. #OccupyNigeria
458 followers |

NWN STAR CoE

NWN STAR- Kevin Fiscus, Cody Dumont & Larry Haxorthematrix Pesce.
449 followers |

ericdomage

Director for Strategy & Market Insight - Orange Business Services - Security BU. Tweets are my own
446 followers |

pentest101

Pentest101 Blog : Penetration Testing
443 followers |

Michael Boman

Application Vulnerability and Malicious Code hunter
442 followers |

aseemjakhar

security & open source evangelist, Founder: null - The open security community, technologist, camper
441 followers |

Jeremy Bae

Information Security Consultant, IT Security Specialist, Professional Penetration Tester, Application Security Specialist, Security Developer (esp. Unix)
434 followers |

Franklin Tallah

Listening. Learning and (hopefully) adding value. Information security, Project management, Fitness.
429 followers |

christopher ashby

Husband, father, and all around rockstar guy! security engineer by day, technical genius for the pink orange by night.
423 followers |

Russ McRee

419 followers |

Kim Guldberg

Not your average Marine, Geek information security analyst
416 followers |

Dave Dugal

A gap between the gas pedal and the floor is just wasted space! Also, founding member of Juniper SIRT.
416 followers |

Alec R Waters

NSM practitioner. SIEM driver. Investigator.
416 followers |

Niket Sangani

A computer forensic graduate seeking any opportunity [job/ internship/work placement] in the area of computer forensics.
389 followers |

Kauto Huopio

Sr. Infosec Advisor / Active HAM (OH2LFM)
385 followers |

Lindsay Hamilton

CEO of independent database security controls company (database activity monitoring and vulnerability / configuration management). Technology agnostic.
384 followers |

Edward Frye

CISSP, Information Security, Networking, Geek, Photographer, Motorcyclist, Husband, Father (3)
378 followers |

Wolf

This space left intentionally blank.
378 followers |

Adam Brand

IT security and compliance consultant, IT entrepreneur, CISSP, PCI QSA, blogger at pcifun.com.
374 followers |

Chad Justin Douglas

Born & raised in the mother city Cape Town. Certified by @ECCOUNCIL as a Certified Ethical Hacker & ima #YMCMB fan for life!! #Instagram - ChadJustin
371 followers |

Michael Podemski

Manager, Advisory Services, Ernst & Young. Board member of Chicago chapter of ISACA and Chicago ACL User Group
365 followers |

Raz-Lee Security

The Security Experts for IBM Power i/AS400, specializing in PCI, SOX & HIPAA Compliance. Visit our blog at www.razlee.com/blog
358 followers |

Joe Lefoe

Security Analyst, for a global IT company. A strong interest in Cyber-security, Threat Mitigation and keeping my finger on the pulse of I.T. news.
354 followers |

Victor Julien

Open source network security programmer & contractor, Suricata/Open Infosec Foundation (OISF) lead developer
338 followers |

Jon Janego

security consultant, history buff, runner, and new dad.
334 followers |

Pieter Danhieux

Ninja or Pirate?
323 followers |

Stephen Gantz

Security and privacy advocate, consultant, instructor, and information seeker
322 followers |

Thomas Blackard

322 followers |

Andrew Herlands

I write about InfoSec, threats, attacks, and other items of interest. My opinions are my own, and are not necessarily those of my employer (or anyone else).
322 followers |

Bryan

CISSP, anti-social engineer, scuba diver, ice hockey player (retired), evil genius, etc.
321 followers |

Bamm Visscher

Mossy Oak wearing incident handler and F8 monkey.
311 followers |

David J. Bianco

I do security.
308 followers |

DaftDoki

Infosec, music, beer, , other things geek. Searching for my path to world domination.
303 followers |

JonD

Specialize in pen-testing and computer forensics. Citrix/Exchange/Security/VMware/Scripting/AD/SQL/Oracle/WAN/Geek. I have the internet. Follow me.
291 followers |

Robert M. Lee

US Air Force Cyberspace Officer, Cyber Advocate, Hacker, Control Systems Cyber Security, World Traveler, and Snowboarder
291 followers |

Ron W

A Security / Risk Management CISSP guy / professor
289 followers |

DeSai

Love anything and everything about Application Securit/Infrastructure Security/Risk/Compliance. Securologist with belief in Data is the Source Secure the data.
284 followers |

Jason Meller

Jason Meller is a Threat Engineer at MANDIANT, a web application developer, and a dude who runs around outside.
279 followers |

Scott Rose

NIST DNSSEC project guy
279 followers |

jason andress

Information security professional, pen tester, professor of computer science, author, dad
274 followers |

Mark Marshall

Security engineer and penetration tester. Debian fanboy and Linux/OSX advocate. Mountain bike enthusiast. Minecraft addict.
272 followers |

Sorabh Kalra

Learner of Networks, WiFi, Virtualization & Network Security. When not working or studying - found watching movies, listening to music or reading with @ngreader
271 followers |

Yash Kadakia

CTO at Security Brigade, Blogger at YashKadakia.com, Hackerscenter.com, Securecoding.in and Blog.SecurityBrigade.com.
269 followers |

Tim Callan

Chief Marketing Officer at RetailNext (formerly BVI). Long time blogger about online security, branding, marketing, and technology.
265 followers |

vvv

freedom, coffee, security, technology, philosophy, hacking, forensics, dataviz, open source, beer; ssgt/usmc, cissp, grem, gcfe, software engineering student
260 followers |

Prashant Mahajan

Open Source & Security Evangelist
259 followers |

Monte Bachman

Security Consultant, Slacker-hacker, Linux Fan, Windows hater, Libertarian, Ham Radio, Philosophy, Quantum Theory, Foss Advocate, Perfecting Redneck Cuisine.
255 followers |

John Gerber

Typical security geek who became hooked at a young age. Worked all sides of IT before finding maximum challenges in security.
252 followers |

Alex Band

Product Manager at RIPE NCC. Immersed in everything RPKI. Does other services too!
247 followers |

Florindo Gallicchio

Director of the Risk Management & Security Practice at Bluenog. I used to steal it (legally), now I protect it. I dabble in photography to keep me sane.
240 followers |

Ashsquatch D

We couldn't find sasquatch! Cheese, security, running & stuff!
237 followers |

Nikhil Mittal

Hacker, Info sec professional, Researcher, Bookworm, Military historian, Creator of Kautilya :)
237 followers |

Dimitri

I'm a geek. I'm a big ol' geek. I'm a total geek. ...and I'm okay with that.
230 followers |

rajats

Security Researcher, cricket enthusiast, console gamer
229 followers |

AMol NAik

Web Application Pentester, Vulnerability Researcher
226 followers |

Ayush Anand

Malware Analyst @ Symantec
222 followers |

Raymond Rosario

Masters in Networking and Computer Security, NetAdmin in Chicago, IT Security Consultant, Penetration Tester
220 followers |

Yinal Ozkan

Everyday questions and answers on enterprise information security
215 followers |

Taz Wake

CEH CISM CISSP CRISC certified information security & risk management professional. Always available for new roles, worldwide.
214 followers |

Carl Leonard

Senior Manager, Security Research. Websense Security Labs
208 followers |

Toosmooth

In your base
203 followers |

shawnmer

202 followers |

Harri Sylvander

Incident responder by day, security geek by night.
200 followers |

Vegas Dibb

Information Security consultant, CISSP, beekeeper, alpaca owner, Vegas bore, Linux/Unix geek, Perl programmer and generally miserable old git.
199 followers |

Sooraj K S

Security Research Analyst
199 followers |

Happy Nihilist

Full of snark and loving epic fails in infosec, hacking, and privacy.
190 followers |

Marco Thorbruegge

A guy tweeting about stuff. Tags: #tools, #training and #events for #csirts, other #fun stuff i find interesting ... and #lego!
187 followers |

mcs

IT security and compliance maven.
184 followers |

Secure Bart

181 followers |

Mari Nichols

Internet Storm Center Incident Handler
180 followers |

Matty G/TrunkMonkey

Geek, Nerd, Infosec Professional, Forensicator, Ham, Dad.
171 followers |

Chris Goggans

Erik Bloodaxe. Hacker.
169 followers |

Cindy Bryant

I have a few certs & a few degrees. Currently working in NEI 08-09 compliance; its a whole new world!
168 followers |

Jason Todd

Hi. My name is Jason Todd but you can just call me JT. I like hacking and I'm pretty good at it. Feel free to contact me.. jttech2011@ymail.com
164 followers |

Exploits Online

Too busy to blog. Will catch up.
157 followers |

Nadeem Ahmed Salim

Information Security Geek,Movie Buff and Foodie !!!
157 followers |

Leo

CISSP, CEH, CISM, CISA Training available at www.TheCodeOfLearning.com Try Our Online Classroom FREE
136 followers |

Murtuja Bharmal

IT/Network Security Professional, Linux/Unix Enthusiast, Interested in anything related to security.
131 followers |

Ralph Logan

Security Matters
125 followers |

Rob Kraus

Solutionary, Inc. - Manager, Security Consulting Services
124 followers |

Steve Jensen

AppSec, Reverse Engineering, Mobile testing...generally just try to break a lot of @#$%!...Oh yeah, pool player too!
119 followers |

Alex Rothacker

Director of Security. Leading teamShatter the database security research team at Application Security Inc
117 followers |

Secret CSO

Actual CSO in the NYC area. Dealing with InfoSec since early 90's - way before it was 'cool'
117 followers |

Kurt Sauer

infosec engineer who loves language, travel, 囲碁, good stories and all things Japanese
115 followers |

pardhasaradhi

A foren6 enthusiast
106 followers |

Hemanshu

code monkey, linux mechanic, hacker, foodie
99 followers |

Dinesh Bareja

InfoSec Professional
99 followers |

rupeshkajrolkar

Open Source and IT security consultant
98 followers |

Dan Lamar Woodham Jr

IT Operations Manager at BMW Financial Services Japan. Orginally from the US. Security Background CISSP, CCFS Been in Japan 14yrs. Worked at IBM and NTT Com
97 followers |

Shane Lawson

hacker and rant factory
88 followers |

Teemu Mäkelä

a devoted information security professional interested in all kinds of gadgets and new technology. CISSP, CISA, CISM, QSA
72 followers |

Carlos A. Suárez

Cyber Security Professional, CEH/ ECSA/ MCSA/ MCSE/ MCT, Eager CISSP. Founder of SecTorch www.sectorch.com
72 followers |

Piyush Maharishi

Security Analyst/Ethical Hacker
61 followers |

Jim Molini

InfoSec Pro and Dad.
34 followers |

Michael Angelo Vien

31 followers |

Kraken

Absolute Security? Stop kidding ourselves! Just do our part vigilantly and be responsible, and ethical.
24 followers |

Curated by I.Matsuura
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