Jared Holt @jaredlholt.bsky.social Senior researcher at @openmeasures.io
Co-host of "Posting Through It": https://www.patreon.com/PostingThroughIt
Rami (drunkrhin0) 🇵🇸 @drunkrhin0.notramimalek.zip Infosec | Photographer | West Australian (the other side from sydney/melbourne)
Mastering Burp Suite @mastering-burp.agarri.fr Tips and tricks for Burp Suite Pro 🛠️
Not affiliated with @portswigger.net ©️
Managed by @agarri.fr 🇫🇷
Additional free resources 🎁
http://hackademy.agarri.fr/freebies
Joel Margolis (teknogeek) @teknogeek.io hacker
Liam @leesoh.bsky.social 
noperator @noperator.bsky.social tech tasks are cool and hacking is great
harisec @harisec.bsky.social Interested in web security, bug bounties, machine learning and investing. SolidGoldMagikarp
pwneip @pwneip.bsky.social Principal RTO @F500, SANS Instructor & #SEC565 Red Team Ops Author, Red Team Village lead, former Bishop Fox, US Air Force. Tweets are my own, memes are stolen
ᴅᴀɴɪᴇʟ ᴍɪᴇꜱꜱʟᴇʀ @danielmiessler.bsky.social AI / Security Researcher and Entrepreneur.
Founder/CEO of Unsupervised Learning.
Building AI that upgrades humans.
vortex @vortex.au I do offensive security things on the internet
Michele Spagnuolo @miki.it 💼: Staff Information Security Engineer at Google. 🛠️: Rosetta Flash, BitIodine. 💛: web security, ⟠, ₿, finance. Data is the most dangerous form of opinion.
Marco Squarcina @minimalblue.bsky.social Senior Scientist @TU Wien / Web & Mobile Security / #drumandbass DJ
🚩 with @mhackeroni.bsky.social We_0wn_Y0u kukhofhackerei Team Austria
🔗 https://minimalblue.com/
Web Security Academy @websecacademy.bsky.social Free web security training from PortSwigger.
SeanWrightSec @seanwrightsec.com Principal Application Security Engineer focused on all things #AppSec. Occasionally dabble in my own research. Also keen gamer and aspiring photographer.
Soroush Dalili 🍏🍐 @irsdl.bsky.social Hacker (ethical), web appsec specialist, trainer, tools builder & apps breaker, X: @irsdl
https://secproject.com/
https://soroush.me/
https://burpsuite.ninja/
Lukas Weichselbaum @webappsec.dev Leading Google's web security team.
Passionate about web security and making secure-by-default web development the norm. Contributed to web platfom security features like CSP, Fetch Metadata, COOP and Trusted Types.
OWASP London Chapter @owasplondon.bsky.social #OWASP London Chapter
Follow us on X/Facebook/Meetup/Eventbrite/LinkedIN/YouTube. Mastodon: https://infosec.exchange/@owasplondon
🌐 Webpage: https://owasp.org/london
👋 Meetup: https://meetup.com/OWASP-London
📺 YouTube: https://youtube.com/OWASPLondon
OWASP Ottawa @owaspottawa.bsky.social The OWASP Chapter for Canada's Capital region.
https://owasp.org/ottawa/
Join us for monthly meetups discussing a variety of security topics.
ZAP by Checkmarx @zaproxy.org The Worlds Most Popular Web App Scanner.
Kévin Gervot (Mizu) @mizu.re About me?
| Website: https://mizu.re
| Tool: https://github.com/kevin-mizu/domloggerpp
| Teams: @rhackgondins, @FlatNetworkOrg, @ECSC_TeamFrance
| From: https://twitter.com/kevin_mizu
0xacb @0xacb.com Hacker grinding for L1gh7 and Fr33dφm, straight outta the cosmic realm.
Co-founder @ethiack.com
https://0xacb.com
Mathias Karlsson @avlidienbrunn.se Web security fiddler. Bug bounty bastard. Sometimes I cut shapes.
Michael Blake @michael1026.bsky.social Application security engineer / bug bounty 
Tom Anthony @tomanthony.bsky.social Web dev since 1998. Bug bounty & security enthusiast. PhD in AI. CTO at SearchPilot - data driven SEO.
https://www.tomanthony.co.uk
Sam Curry @zlz.bsky.social 
Lauritz @lauritz-holtmann.de IT-Security Researcher, Pentester and Bug Hunter. Passionate about 💻, 🤽♂️, ⚜️, 🎸 and ⚽ #meinVfL
#Kaeferjaeger + H1 Ambassador
🏠 https://security.lauritz-holtmann.de
Mikhail Shcherbakov @yu5k3.bsky.social Doing security research. For fun and profit...
The Hacker's Choice (1995) @hackerschoice.bsky.social Security Research Group.
Michael Stepankin @artsploit.com Security Researcher at GitHub Security Lab, ex Portswigger.
https://artsploit.blogspot.com/
Black Hat Events @blackhatofficial.bsky.social The World's Premier Technical Cybersecurity Conference Series
blackhat.com
Join Us at Black Hat USA this August 2-7, 2025: blackhat.com/us-25/
Black Hat @blackhatevents.bsky.social The world's premier Technical Cybersecurity Conference Series
Thomas Brewster @thomasbrewster.bsky.social Forbes senior writer, covering privacy, surveillance and cybercrime. Editor of The Wiretap newsletter, featuring all of the above.
Simon Bennetts @psiinon.bsky.social ZAP Project Lead
Nicolas Krassas @dinosn.bsky.social Head of Threat & Vulnerability Mgmt @ Henkel AG & Co. KGaA
https://t.co/NC1orlKrW3
Also at : @dinosn
Erik Remmelzwaal @erik.zolder.io Co-Founder Zolder.io | Promoter of Atticsecurity.com | Creator of Cybersecurity | Lover of the Misses | Father of Two | Coach of Fieldhockey | Haver of no Worries
Michiel Prins @michielprins.bsky.social Co-founder @ HackerOne
Jef Kazimer 😶🌫️ 🆔 @jeftek.com Principal Product Manager @Microsoft #security focused on #Entra #Identity and Identity Governance
- 🆔 & #Cybersecurity
- Star Wars 🌟 nerd
- Disney Adult 🏰
My posts are not official support of my employer
My info and content is at https://jeftek.com
Oscar Koeroo @okoeroo.bsky.social CISO somewhere and cyber stuff.
2600 - The Hacker Quarterly @2600.com Since 1984, 2600 Magazine has published the hacker perspective and documented the development of the hacking community. In addition to the magazine, we have a weekly radio show ("Off The Hook") and a biennial conference (Hackers On Planet Earth - HOPE).
Microsoft Security Response Center @msrc.microsoft.com We are the Microsoft Security Response Center. To report security vulnerabilities or abuse in Microsoft products, visit http://microsoft.com/en-us/msrc.
Uncle Joe @sydseter.com Co-leader OWASP Cornucopia. If you like what we do for open source, visit our code repository https://github.com/OWASP/cornucopia and give us a star ⭐
🌈 «Difference is of the essence of humanity» 🦄 – John Hume
#appsec #owasp #cornucopia #threatmodeling
Marten Mickos @martenmickos.bsky.social CEO in the service of AI startup CEOs.
Former CEO of HackerOne, Eucalyptus Systems, MySQL.
Roman @theroman.bsky.social DFIR | SOC Automation | Analyst Burnout Advocate | Low-Tech Bro | Used to be with ‘it’ until they changed what ‘it’ was! | He/Him
crudd @crudd.re Reverse Engineering and Malware Analysis
Bryan Ross @bryanross.me Developer advocate, platform engineering veteran, and public speaker. Field CTO at GitLab. I help businesses gain value from technology.
GitLab @gitlab.com Build software faster. The DevSecOps Platform enables your entire organization to collaborate around your code.
Matthew Garrett @mjg59.eicar-test-file.zip Former biologist. Actual PhD in genetics. Security, OS security teaching at https://www.ischool.berkeley.edu.
Blog: https://codon.org.uk/~mjg59/blog
Signal: @mjg.59
He/him
Opinions expressed here are mine, not my employer's
OWASP® Foundation @owasp.org We improve the security of apps with community-led open source projects, 260 local chapters, and tens of thousands of members worldwide. Famous for OWASP Top 10
Adam Shostack @adamshostack.bsky.social Threat modeling. BH Review Board. Affiliate Professor, UW. Fixed autorun. Helped create CVE.
Not sure why we're building graphs on yet another (effectively) centralized system. https://infosec.exchange/@adamshostack
DEF CON @defcon.bsky.social The world’s premier hacker conference. Serving the global hacker community since 1993.
Defcon.org
Forum.defcon.org
Defcon.social
Marcus Hutchins @malwaretech.com threads.com/@malwaretech
https://linkedin.com/in/malwaretech
https://marcushutchins.com
david desanto @ddesanto.bsky.social CEO @ Anaconda | Lego enthusiast
@bsidesdublin.bsky.social @bsidesdublin.bsky.social Security BSides Dublin (BSidesDub) Official Twitter account. Next conference taking place at Trinity College Dublin on 24th May 2025. https://www.bsidesdub.ie/
BSides Belfast @bsidesbelfast.bsky.social #BSidesBelfast will return with #BSidesBelfast26 Thursday September 10th 2026 at the Europa Hotel
https://bsidesbelfast.org
GitHub Security Lab @securitylab.github.com Securing open source software, together
Bug Bounty Reports Explained @gregxsunday.bsky.social 
Malware Unicorn @malwareunicorn.bsky.social @Straiker. Ex-Microsoft. Ex-Meta RedTeam, Ex-Endgame, Ex Fireeye. malwareunicorn.org
Eric Geller @ericjgeller.com Senior reporter at @CybersecurityDive.bsky.social covering all things digital security. I also co-host @hothtakes.bsky.social. | Send me tips: https://ericjgeller.com/contact.html
Blaklis @blaklis.bsky.social CTF player with The Flat Network Society - bug bounty & web security research
Julien | MrTuxracer @mrtuxracer.bsky.social CEO @rcesecurity.com | Full-time #BugBounty | @hacker0x01.bsky.social H1-Elite | $1,500,000 Overall Bounties | ❤️ IDA Pro | Mobile Hacker
OrangeCon @orangecon.nl The Dutch Cybersecurity Conference! Experience the Hackers Community in Amsterdam, on June 4th 2026!
Baptiste Robert @fs0c131y.com CEO @ Predicta Lab | French Security Researcher, Ethical Hacking, OSINT
Jelle Prins @jelleprins.com Designed the first apps for Uber.com, Booking.com, Catawiki.com and many others.
Co-founder http://operator.exchange and http://cradle.bio
Max @disclosing.observer PhD Candidate in Anti-Abuse Strategy & Ethics @ TU Delft
CSIRT Operations Lead @ https://divd.nl
Virtual Routes Fellowship Alumnus '24-'25
Writing about it all on https://disclosing.observer
Joseph Hewitt @jhewitt.net Cybersecurity consultant with an interest in electronics. British, but now living in The Netherlands. Creator of the ESP32 wardriver: wardriver.uk
Carl Morris 🇬🇧 @camorris.bsky.social In a constant state of confusion with a healthy dose of imposter syndrome!
Sr. Security Researcher@OrangeCyberdefense.
Still fighting with my mental health after 25+ years of treatment...
Lifelong Man City supporter
My opinions are exactly that, mine
Nicolas Grégoire @agarri.fr Web hacker 😈
Burp Suite Pro trainer 👨🏫
Maintainer of @mastering-burp.agarri.fr 🛠️
hakluke @hakluke.com Dad, hacker, solo founder of haksec.com and hackercontent.com.
shubs @shubs.io Co-founder, security researcher. Building an attack surface management platform, @assetnote.io
Michael Skelton @codingo.com VP of Security Operations at Bugcrowd, Security Content @ http://youtube.com/codingo, tools @ http://github.com/codingo. SecTalks and BSides Gold Coast co-organizer - He/Him
Alex Chapman @ajxchapman.bsky.social Full Time #BugBounty Vulnerability Researcher
https://blog.ajxchapman.com
zseano @zseano.bsky.social @zseano
Tib3rius @tib3rius.bsky.social Web App (mostly) Hacker | Cybersecurity Educator | Content Creator | Ex-Brit | Links: http://linktr.ee/tib3rius (he/him) 🇺🇸 A mostly unserious person. @therealc3rul34n.bsky.social is bae 🥰
Assetnote @assetnote.io True Attack Surface Management - https://assetnote.io
John Hammond @johnhammond.bsky.social Hacker. Friend. Cybersecurity Researcher at Huntress.
Sander Spierenburg @spierenburg.bsky.social 🇪🇺 // Security Analyst // Defender of networks // Cyclist // #BlueTeamFit // I don’t follow anyone you follow
Edwin van Andel @yafsec.bsky.social http://Zerocopter.com | CTO | Speaker | Security | Hacking | ALT-S Organizer | נקר ירוק | Last Unicorn Con | Defcon 003120 | @iamthecavalry | @yafsec@mastodon.online
CryptoCat @cryptocat.me Security Researcher @rapid7.com 😈
Hacking Content @ https://yt.cryptocat.me 💜
BSides Basingstoke @bsidesbsk.bsky.social BSides Basingstoke! Annual event on Friday 31st July 2026.
Website: https://www.bsidesbasingstoke.com/
Colin Glenn @ctglenn4.bsky.social Cyber Security @Intigriti
UEFA C coach @Locksheathfc, @wyvernfc & @WhiteleyWFC
Trying this out and jumping on before its a full bandwagon ... Views and posts all my own
Jorian @jorianwoltjer.com Normalize being weird.
Ottilia @ottiliaw.bsky.social full time craft gnome w/ a cyber security side hustle
🇸🇪🇫🇮 based in 🏴
terjanq @terjanq.me security enthusiast that loves hunting for bugs in the wild. co-founder and player of @justCatTheFish.
infosec at @google. opinions are mine.
From: https://twitter.com/terjanq
Gareth Heyes @garethheyes.co.uk Web security researcher at PortSwigger. Author of JavaScript for Hackers, Shazzer and Hackvertor.
https://garethheyes.co.uk/
Ciarán Cotter (monke) @monke.ie Irish web hacker. Founder @ Simian Security. Newsletter every week at https://monke.ie. Reach out at https://simiansecurity.com 🇮🇪/🇯🇵
m1tz @m1tzzz.bsky.social Web Security Expert | Bug Hunter | Käferjäger
Pieter Hiele @honoki.net 💻 hacker / relapsed bug bounty hunter
💤 mostly tired of tech
✍️ occasional blogger
🎵 amateur jazz pianist
⁉️ chess enthusiast
🤿 daydreaming of scuba diving
🌐 https://honoki.net
ggisz @ggisz.bsky.social AppSec & Offensive Security
Justin Gardner @rhynorater.bsky.social Christian | Full-time Bug Bounty Hunter | Host @ctbbpodcast.bsky.social | Advisor @caido.io | 3x LHE MVH | 🗣️ English, 日本語
Orange Tsai @orange.tw This is 🍊
@fransrosen.bsky.social @fransrosen.bsky.social 
daniel:// stenberg:// @bagder.mastodon.social.ap.brid.gy I write curl. I don't know anything.
🌉 bridged from ⁂ https://mastodon.social/@bagder, follow @ap.brid.gy to interact
Phillip Wylie @phillipwylie.bsky.social Offensive Security Professional | Phillip Wylie Show Podcast Host | The Pentester Blueprint coauthor | TribeOfHackers Red Team | https://linktr.ee/phillipwylie
trein @reindaelman.bsky.social Security Researcher at Aikido | OSWE | BSCP | https://hackerone.com/trein
Insomni'hack @1ns0mn1h4ck.bsky.social Security conference and hacking contest founded and organized by
@orangecyberch since 2008 in Lausanne, Switzerland. 
Lennaert89 @lennaert89.bsky.social Interested in infosec / hacking / osint / dfir / bugbounty!
Formerly Zerocopter.com, currently Head of Triage at Intigriti.com
Head CSIRT over at divd.nl
Hacknotcrime Advocate
Aut viam inveniam aut faciam.
Intigriti @intigriti.com Bug bounty & VDP platform trusted by the world’s largest organisations! 🌍
linktr.ee/hackwithintigriti
Furrtek @furrtek.bsky.social Virtual coyote obsessed with retro electronics reverse-engineering, theme park tech, music, and giant robots 💚.
Likes the demoscene, SDR, urbex, pointy animals, graffiti, things on rails, North Korea. No AI bros, shills or posers, thanks. 🇫🇷/🇺🇸
Burp Suite @burpsuite.bsky.social Burp Suite is the leading software for web security testing.
PortSwigger @portswigger.net We are a leading provider of software and learning on web security. We make Burp Suite and the Web Security Academy.