GreyNoise @greynoise.io GreyNoise analyzes Internet background noise. Use GreyNoise to remove pointless security alerts, find compromised devices, or identify emerging threats.
Fireship @fireship.bsky.social Build and ship your app faster with Jeff Delaney 🔥📽️ http://youtube.com/c/Fireship
Anders Puck Nielsen @anderspucknielsen.dk Military analyst, naval officer, based in Denmark, mostly #Russia and the war in #Ukraine.
YouTube: https://youtube.com/@anderspuck
Newsletter: https://www.logicofwar.com
Author of The Logic of War: https://a.co/d/01Ep6RtI
Hakugard @hakugard.bsky.social Works in green/fintech as a software developer, fighting for the energy transition using real economics and modelling.
Likes technology, economics, and the environment. Dangerously woke member of the "extreme left", British European federalist.
Johan Rydberg Möller @johanrydbergmoller.bsky.social Penetration tester, founder of Security Fest, podcaster at Säkerhetspodcasten.
Julia Davis @juliadavisnews.bsky.social Columnist @TheDailyBeast, creator of the Russian Media Monitor, sanctioned by Russia.
I watch Russian state TV, so you don't have to.
Author of a book "In Their Own Words: How Russian Propagandists Reveal Putin’s Intentions."
The Ukrainian Review @theukrainianreview.bsky.social Ukrainian perspective on the media worldwide 🌎
Website: https://theukrainianreview.info/
Filippo Valsorda @filippo.abyssdomain.expert @geomys.org founder / RC F'13, F2'17
Cryptogopher / Go cryptography maintainer
https://filippo.io / https://github.com/FiloSottile
https://mkcert.dev / https://age-encryption.org
https://sunlight.dev / https://filippo.io/newsletter
Internet Archive @archive.org Internet Archive is a non-profit research library preserving web pages, books, movies & audio for public access. Explore web history via the Wayback Machine. 
William Gibson @greatdismal.bsky.social Author of Neuromancer and, most recently, Agency (still above from “Kill Switch”, The X-Files, Season 5, Episode 11, co-written with Tom Maddox)
Marcus Hutchins @malwaretech.com threads.com/@malwaretech
https://linkedin.com/in/malwaretech
https://marcushutchins.com
BleepingComputer @bleepingcomputer.com Breaking cybersecurity and technology news, guides, and tutorials that help you get the most from your computer. DMs are open, so send us those tips!
Joseph Frusci @theaveragejoe.org Cybersecurity | Cloud | AI | Networking | Education | Coffee
https://linktr.ee/joseph.frusci
Johan Carlsson @joaxcar.bsky.social Full time bug bounty hunter. Look for ”joaxcar” on other platforms
OWASP Threat Dragon @threatdragon.bsky.social Threat Dragon threat modeling tool from OWASP
owasp.org/www-project-threat-dragon/
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
Katie Moussouris (she/her/she-hulk/she-ra)🌻 @k8em0.bsky.social Founder & CEO LutaSecurity @payequitynow MIT&Harvard visiting scholar, @MasonNatSec fellow, 1/2 Chamoru, 1/2 Greek all-American hacker
@rajerco.bsky.social @rajerco.bsky.social 
Bluesky Safety @safety.bsky.app Sharing updates about trust and safety on Bluesky.
This account’s mentions are not actively monitored. To report a post or account, use the in-app reporting feature.
Community Guidelines: https://bsky.social/about/support/community-guidelines
The Washington Post @washingtonpost.com Democracy Skies in Blueness
The New York Times @nytimes.com We seek the truth and help people understand the world. Not a subscriber? Your first month is now free in our app. https://nytimes.onelink.me/Xpht/zbx4nci9
Electronic Frontier Foundation @eff.org We're the Electronic Frontier Foundation. We're a nonprofit that fights for your privacy and free speech online. Find all of EFF's social media accounts at eff.org/social.
POLITICO Europe @politico.eu Nobody knows politics and policy like we do.
Financial Times @financialtimes.com The best of FT journalism, including breaking news and analysis.
https://www.ft.com
The users this account follows are verified FT staff or contributors.
Meduza in English @meduza.io Breaking news in Russia, investigative reports, interviews, and opinions. In English. You’re welcome. https://meduza.io/en
Troy Hunt @troyhunt.com Founder & CEO of @haveibeenpwned.com, the most trusted name in data breach intelligence. Speaker, blogger, Microsoft Regional Director. Gold Coast, Australia.
FT Visual & Data Journalism @data.ft.com The FT’s team of reporters, statisticians, illustrators, cartographers, designers, and developers work with colleagues across our newsrooms, using graphics and data to find, investigate and explain stories.
https://www.ft.com/visual-and-data-journalism
AFP News Agency @en.afp.com Top news and features from AFP's reporters around the world.
u.afp.com/socials
Bellingcat @bellingcat.com Bellingcat is a global collective uncovering facts to hold power to account. Our work is independent. Our methods are public. Our community is global.
Want to support our charity? bellingcat.com/donate
Ange @angealbertini.bsky.social Reverse engineer, file formats expert.
Corkami, CPS2Shock, PoC||GTFO, Sha1tered, Magika...
Security engineer @ Google. He/him.
Ron Bowes @iagox86.bsky.social Staff Product Detection Engineer @ Censys. https://skullsecurity.org
Mostly post about professional stuff, maybe some improv stuff and maybe even magic some day. Seattle-based (originally Canadian), queer, cybersecurity nerd.
(He/him)
oshogbo//vx @oshogbo.bsky.social 🔨 Building things
😈 #FreeBSD developer
🌶 #security engineer
💾 #storage engineer
WEB: https://oshogbo.com
Paged Out! @pagedout.bsky.social Paged Out! is a free magazine about programming, hacking, security hacking, retro computers, modern computers, electronics, demoscene, and other similar topics. Always accepting submissions of one-page articles.
April King @april.social Staff Security Engineer at some random tech company, previously Mozilla, Dropbox, LinkedIn, and (pre-Elon) Twitter. Has read @kateconger.bsky.social’s autobiography.
web @ grayduck.mn // also github.com/april
Joo N/A @joohoi.bsky.social Hacks for beer. FOSS, infosec and privacy. Chaotic good.
Mike West @mikewe.st web browser stuff: security, privacy, safety, etc.
@fransrosen.bsky.social @fransrosen.bsky.social 
@albinowax.bsky.social @albinowax.bsky.social 
Lukasz Olejnik @lukaszolejnik.bsky.social Security & Privacy. Data Protection. Research & Development. Engineering. Analyst. Policy. W3C. Consultant. Author. King’s College London/War Studies. me@lukaszolejnik.com
lukaszolejnik.com/books
blog.lukaszolejnik.com
techletters.substack.com
Gynvael Coldwind @gynvael.bsky.social Security researcher/programmer ⁂ Managing director @ HexArcana ⁂ @DragonSectorCTF founder ⁂ he/him
Thomas Rid @ridt.bsky.social @ridt on X
Matthew Flanagan @mattimustang.com Director and Principal Cyber Security Consultant @cybliminal.com
Nathan McNulty @nathanmcnulty.com Loves Jesus, loves others | Husband, father of 4, security solutions architect, love to learn and teach | Microsoft MVP | @TribeOfHackers | 🐘infosec.exchange@nathanmcnulty
Dirk-jan @dirkjanm.io Hacker at outsidersecurity.nl. Researches Entra ID, AD and occasionally Windows security. I write open source security tools and do blogs/talks to educate others on these topics. Blog: dirkjanm.io
Tailscale @tailscale.com Your private programmable network.
goggan @goggan.bsky.social 
Christopher Glyer @cglyer.bsky.social Microsoft Threat Intelligence Center - Former Incident Responder & Chief Security Architect @Mandiant
Rudy Ooms | MVP @call4cloud.nl {"Title":"Microsoft MVP","Talks About":"Intune, Autopilot, MMP-C ","Function":"Master Chief Content creator PMPC","Blog":"https://Call4cloud.nl"}
Tom Uren @tom.risky.biz Author of the Seriously Risky Business cyber security newsletter
Fabian Bader @fabian.bader.cloud #Security #Azure #EntraID #XDR #MDE #Identity #M365 #AD #PKI #KQL
Microsoft MVP
Tweets and opinions are my own
TrendAI Zero Day Initiative @thezdi.bsky.social TrendAI Zero Day Initiative™ (ZDI) is a program designed to reward security researchers for responsibly disclosing vulnerabilities.
BSides Las Vegas @bsideslv.org BSides Las Vegas will take place August 3-5, 2026
Las Vegas · bsideslv.org
HD Moore @hdm.io runZero & Metasploit
Joost Gelijsteen | MVP @mdmlab.nl | #MSIntune #MVP| #Security | https://joostgelijsteen.com
attacus || Lilly Ryan @attacus.net Computational entomologist, privacy enthusiast, historian. Perpetually raging against the ghost in the machine.
Mastodon: @attacus@aus.social
👁 Digital Rights Watch | 🎙 Byte Into IT on 📻 3RRR FM | 🐍 PyCon AU
Olaf Hartong @olafhartong.nl Security researcher with a camera | @FalconForce.nl | Microsoft MVP | Snow man role model | https://youtube.com/@olafhartong
Jeremy Kirk @jkirk.bsky.social Okta Threat Intelligence. Personal account. Interests: Cyber threat intelligence, OSINT, data breaches, AI. Formerly intel analysis @ Intel 471. jeremykirk.com
The Shadowserver Foundation @shadowserver.bsky.social Our mission is to make the Internet more secure by bringing to light vulnerabilities, malicious activity and emerging threats. Join our Alliance!
https://shadowserver.org/partner
Merill Fernando 💚 @merill.net Product Manager @microsoft | Creator of bluesky.ms • cmd.ms • idPowerToys.merill.net • Graph X-Ray • 🇦🇺 • 🇱🇰 • Posts my own
http://youtube.com/@merillx
Sign up to my newsletter https://entra.news
chompie @chompie.rip hacker, poster, weird machine mechanic
https://chompie.rip
Catalin Cimpanu @campuscodi.risky.biz ☆ Cybersecurity reporter
★ Newsletters at Risky Business
#infosec #cybersecurity
https://risky.biz
Patrick Gray @patrick.risky.biz https://risky.biz/
Jake Williams @malwarejake.bsky.social Breaker of software, responder of incidents, IANS Faculty, VP R&D Hunter Strategy.
the grugq @thegrugq.bsky.social 
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
Michael Epping @michaelepping.com Senior Product Manager in the Identity and Network Access Division at Microsoft. Opinions are my own.
@csirac2.bsky.social @csirac2.bsky.social 
Duncan "Klaxon" Jepson @duncanjepson.bsky.social 
Cyber Goodies @cybergoodies.run Cyber security, anytime, anywhere.
https://cybergoodies.run by @cybliminal.com
cybliminal @cybliminal.com A boutique, threat informed, defence focused cyber security company.
Topy @t0py.bsky.social Hacker. Breaker. Lock Picker. Physical Security Enthusiast. Photography. HackHouse. OzSecCon founder. Curious. IBM Z9 Owner. Warranty Void If Removed.
Formerly @Infosecfriends on Twitter.
https://hackhouse.org
0patch by ACROS Security @0patch.bsky.social Tiny security patches for Windows and 0days. No reboots, no restarts.
Lukasz Gogolkiewicz @synick.bsky.social cyber guy, advocate for diversity in tech, mentor, adventurer, and woodworker...
Steve Cooper @blueteamsteve.bsky.social Building a detection engineering platform for ai-native cyber teams
HaxRob @haxrob.net Telco / mobile and IoT security.
Surfing the information super highway one keystroke at a time.
https://haxrob.net
Larry Pesce @haxorthematrix.bsky.social Hacker of stuff, builder of things.
Paul Asadoorian @paulasadoorian.bsky.social Founder of Security Weekly, Principal Security Evangelist at Eclypsium
Team Cymru - S2 Threat Research @teamcymrus2.bsky.social Follow us for the latest blogs and IOCs from Team Cymru's S2 Threat Research team.
PentesterLab @pentesterlab.com We make learning web hacking and security easier. Online systems, code review, videos & courses that can be used to understand, test and exploit bugs!
Andy Robbins @andyrobbins.bsky.social aka wald0
CrikeyCon @crikeycon.bsky.social 
AND!XOR @andnxor.bsky.social We make stuff. We drink beer. In no particular order. #mattdamon
metlstorm @metlstorm.risky.biz Unix berserker, retired hacker-con organiser (Kiwicon!) and now technology-editor-slash-sysadmin-janitor at Risky.biz.
Was @metlstorm on Twitter, am metlstorm@infosec.exchange on Masto. 
Rory McCune @mccune.org.uk Security geek, Containers, Kubernetes, Golang/Ruby, hillwalking
Home Page :- https://www.mccune.org.uk
Blog:- https://raesene.github.io
Simon Bennetts @psiinon.bsky.social ZAP Project Lead
ZAP by Checkmarx @zaproxy.org The Worlds Most Popular Web App Scanner.
kingthorin_rm @kingthorin.bsky.social IT Sec guy, zaproxy co-lead, WSTG co-lead, VWAD co-lead, OWASP Ottawa volunteer, Hac≺3r, supporter of oxford commas, #INTJ. (Opinions == mine) 🍁
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
OWASP Juice Shop @owasp-juice.shop Probably the most modern and sophisticated insecure web application. Only we offer a 100% @owasp.org Top Ten incompliance guarantee! Skeets by @bkimminich.bsky.social
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.
Robin @digi.ninja Hacker, coder, climber, runner, triathlete.
Always learning.
Co-flounder of SteelCon
PortSwigger @portswigger.net We are a leading provider of software and learning on web security. We make Burp Suite and the Web Security Academy.
Dafydd Stuttard @dafyddstuttard.bsky.social Founder and Chief Swig at PortSwigger. Creator of Burp Suite and the Web Security Academy. Author of The Web Application Hacker's Handbook.
David Paterson @djpaterson.dev Software Engineer at PortSwigger and Man City season ticket holder
Sam Stepanyan @securestep9.bsky.social OWASP London Chapter Leader. #OWASP Global Board Member. OWASP #Nettacker Project Leader. #AppSec Consultant, #CISSP. Follow me on Twitter/X and Mastodon https://twitter.com/securestep9 https://infosec.exchange/@securestep9
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 🥰
Josh Grossman (tghosth 👻) @joshcgrossman.com Friendly AppSec Ghost 👻
https://appsecg.host