Sam Riddell @riddellsam.bsky.social Senior Analyst at Google Threat Intelligence Group. Focused on info ops & cyber threat intelligence.
Jill 🦋 @jill.svpn.com @svpn.com team
Frank S @ninja.style I like to make stuff and do hacks. Consultant penetration tester for 9 years. #cybersecurity #infosec #hacking Denver CO. https://github.com/ninjastyle82
Amy Renee @amyengineer.bsky.social All things networking & security.
Sharer of knowledge, purveyor of puns, curator of amusement. Wielder of snark & sparkly bats.
@amyengineer@infosec.exchange
@amyengineer on the Twitters
LimaCharlie @limacharlie.io Security tools and infrastructure on-demand. Use LimaCharlie to automate and manage security operations at scale.
Brian Honan @brianhonan.bsky.social Irish cybersecurity pro, author, speaker, and commentator.
CEO of BH Consulting, Head of Ireland's first CSIRT - IRISSCERT, former member of ENISA Advisory Group, & former Special Advisor on CyberSecurity to Europol.
PGP ID 0xF1B5CF7D
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
Allan “Ransomware Sommelier” Liska @ransomwaresommelier.com Recorded Future - Ransomware Researcher
Owner @greenarcher.io - Yours Truly, Johnny Dollar | The Press Guardian | The Clock | The Green Archer
Weird mix of security, comics, photography and wine!
www.greenarcher.io
Tim Starks @timstarks.bsky.social Senior reporter, CyberScoop, covering spyware, cyber policy and more. Russia-sanctioned. Former Washington Post, POLITICO, CQ Roll Call. @timstarks.02 on Signal. tim.starks@cyberscoop.com. Mastodon timstarks@infosec.exchange, X timstarks, Threads tstarks2.
Sergiu Gatlan @serghei.bsky.social Cybersecurity/tech reporter @BleepingComputer / serghei.ro
The Citizen Lab @citizenlab.ca We are an academic research unit at the University of Toronto investigating novel threats to democracy, human rights, and global security in the digital ecosystem.
John Scott-Railton @jsrailton.bsky.social Chasing digital badness. Senior Researcher at Citizen Lab, but words here are mine.
Alex Ionescu @ionescu.bsky.social Windows Internals Author, Developer, Reverse Engineer, Security Researcher, Speaker, Trainer, and most recently Nation State Hacker.
Core OS Platform Developer at Apple, Hyper-V Vendor at Microsoft, Chief Architect at CrowdStrike and now Director at CSE.
Rob Joyce @rgblights.bsky.social Cyber guy. Former NSA cybersecurity director and chief of TAO. Lover of memes. Warning - occasional outrageous Christmas light content.
Catalin Cimpanu @campuscodi.risky.biz ☆ Cybersecurity reporter
★ Newsletters at Risky Business
#infosec #cybersecurity
https://risky.biz
hakan @hatr.bsky.social reporter covering cyber (both crime and state-sponsored) for Der Spiegel and ZDF, short overview at https://linktr.ee/hakantanriverdi, Signal: hakan.25
Chris Bing @chrisbing.bsky.social Cyber, natsec and foreign affairs. Formers with ProPublica, Reuters and CyberScoop
https://bing-chris.medium.com/how-to-contact-me-d2fd4bd3ed7b
Nicole Beckwith @nicolebeckwith.bsky.social Sr. Manager, Threat Operations @kroger 🍓 CTI, Hunting, Detection Engineering, Insider Risk, Fraud & Forensics 💻 Fmr LE & DFIR for OH & Secret Service TF. #FSD #w00w00 #CFC
Joseph Cox @josephcox.bsky.social Hacking/crime/privacy journalist. Author of DARK WIRE, buy here: https://www.hachettebookgroup.com/titles/joseph-cox/dark-wire/9781541702691/#preorder Co-founder of 404 Media. Signal: joseph.404 Email: joseph@404media.co
INTERPOL @interpol.int Connecting police & catching criminals in 196 countries for more than a century. 🕵️
Follow our success stories here. 👮♂️🚔👮♀️
✍️ Report crimes to your local police.
spencer @bsky.ethicalthreat.com 🛠️ Former Sysadmin, now Pentester | Microsoft MVP | Helping IT teams make their environment harder to attack
Pentesting -> SecurIT360
Podcast -> CyberThreatPOV
Active Directory Security Resources for IT Admins 👇
https://go.spenceralessi.com/adsecurity
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
Claudia @signorina37.ransomnews.online behavioral #cybersecurity & reputation strategist • social engineer • OSINT/SOCMINT/HUMINT • #cyberculture • security awareness & human risk education • COBOL programmer • #nerd
🔺 co-founder @ransomnews.online
外人
https://signorina37.ch
Christopher Luft @tekgrunt.bsky.social Co-Founder @LimaCharlie.io | Host of The Cybersecurity Defenders Podcast
I am interested in computer science, art & growing my own food. Working to disrupt the way cybersecurity tools and supporting infrastructure are delivered.
Maxime Lamothe-Brassard @maximelb.bsky.social Founder at LimaCharlie, cyber security, ex-intelligence/Google/crowdstrike.
David Buchanan @retr0.id reverse engineering, cryptography, exploits, hardware, file formats, and generally giving computers a hard time
Fedi: @retr0id@retr0.id
Macroblog: https://www.da.vidbuchanan.co.uk/blog/
Kevin @adjacentnode.com VLAN therapist. Wi-Fi whisperer.
15 years of proving it wasn’t the network.
Follow me, nerds.
Tom Lawrence @lawrencesystems.com ⚠Tech Enthusiast, Open Source Advocate, Content Creator, DM's are not for tech support but my forums are. ⚠
https://lawrencesystems.com/
Christian Folini @christian-folini.ch Web application security guy with a passion for OWASP's open source WAF projects and National Cyber Strategy.
Maintains "Swiss Cyber Security" starter pack and cherishes his small collection of medieval helmets.
Ryan M. Montgomery @0dayctf.bsky.social Pentester / Serial Entrepreneur / Child Safety Warrior — http://tryhackme.com/p/0day
Hackread.com @hackread.bsky.social The official Bluesky account of the most reliable cybersecurity news platform brings exclusive dark web, tech, hacking news, and much more. Contact: admin@hackread.com.
DEF CON Parrot🦜 @defconparrot.bsky.social Latest News, Fun Moments & Event updates from the DEF CON Community • Follow to stay updated!💛
#DEFCON33 Dates:🎉Aug 07 - Aug 10, 2025
Link of Links {
Resources🌍 •> https://linktr.ee/defconparrot
Updates🗞️ •> https://x.com/defconparrot
}
Black Hat @blackhatevents.bsky.social The world's premier Technical Cybersecurity Conference Series
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.
Unofficial Hackaday Feed @hackaday-feed.bsky.social Unofficial feed from https://hackaday.com/
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
Internet Engineering Task Force @ietf.org The overall goal of the IETF is to make the Internet work better by producing open technical standards.
TheBeardOfKnowledge @thebeardofknow.bsky.social 52K on Tiktok, New to BlueSky.
Sharing my 25+ years IT knowledge.#it #networking #pc #pcrepair #gaming #lowvoltage #tech #techsupport #helpdesk #funny
Parrotassassin15 @parrotassassin15.bsky.social Names parrot 🦜
Founder of https://parrot-ctfs.com
Rich Mogull @rmogull.com Cloud security, hacker, run/bike/drown, TK11940 in the 501st, itinerant disaster paramedic, private pilot, and other stuff. @rmogull on Signal
Chief Analyst at CSA. CEO of Securosis. Both totally made up titles.
https://slaw.securosis.com
Jakoby @iamjakoby.bsky.social 
WIRED @wired.com For Future Reference.
Sign up for our newsletters: https://wrd.cm/newsletters
Find our WIRED journalists here: https://go.bsky.app/Boj9b5E
404 Media @404media.co it's a website (and a podcast, and a newsletter) about humans and technology, made by four journalists you might already know. like and subscribe: 404media.co
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.
Graylog @graylog.bsky.social 🌍 Trusted Threat Detection & Incident Response solutions. Experience the difference with our unmatched capabilities. #SIEM #APISecurity #LogManagement #InfoSec
Tanisha L. Turner @cybersecdiva.bsky.social Cybersecurity Professional | Malware Researcher | Threat Hunter | <Detection> | SecOps
All Views expressed are my own.
Smashing Security podcast @smashingsecurity.com Funny award-winning weekly podcast about hacking, cybercrime, and privacy with @grahamcluley.com.
https://www.smashingsecurity.com
👕 Merch https://www.smashingsecurity.com/store
Patreon: https://www.smashingsecurity.com/plus
Luca @securescientist.eu Dad, husband, cybercrime prof with a kink for attacker economics. Head of the Threat Analysis group @tue.nl. 🇳🇱 by profession, 🇮🇹 by nature, 🇪🇺 by conviction. Optimistic cynicism is my thing. Love most. 🌏🔗securescientist.eu
TrendAI Zero Day Initiative @thezdi.bsky.social TrendAI Zero Day Initiative™ (ZDI) is a program designed to reward security researchers for responsibly disclosing vulnerabilities.
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
Alex Stamos @stamos.org CPO/CSO of Corridor.dev, teaching at Stanford.
Pwnallthethings @pwnallthethings.bsky.social Just thinking out loud.
Patrick Howell O’Neill @patrickhowelloneill.com Journalist at Bloomberg News in DC. Signal: @howelloneill.01, email: patoneill1@bloomberg.net https://www.bloomberg.com/authors/AXb8dLPHBFc/patrick-howell-oneill
InfoSecSherpa 🏔️ Lake Ontario 🚣♀️ @infosecsherpa.bsky.social #Librarian turned #InfoSec & #DataPrivacy practitioner. #Philly area hoagie mouth. InfoSecSherpa and Sherpa Intelligence: Your Guide Up a Mountain of Information! Portfolio: https://linktr.ee/infosecsherpa #GoBirds
shellsharks @shellsharks.shellsharks.social.ap.brid.gy Infosec researcher | Indieweb enthusiast | Find me @ https://shellsharks.com
#infosec #cybersecurity #tech #indieweb searchable
Profile picture: A red shark […]
🌉 bridged from ⁂ https://shellsharks.social/@shellsharks, follow @ap.brid.gy to interact
System76 Blog @blog.system76.com.web.brid.gy Official System76 Blog
[bridged from https://blog.system76.com/ on the web: https://fed.brid.gy/web/blog.system76.com ]
CajunGeek @cajungeek.tv #AuDHD PTSD | Air Force #Veteran | Gamer & #Streamer in da bayou!
Twitch | YouTube | Tiktok
#destiny2creator #ubisoftcreator
Supporter of @StackUp.org
Socials: cajungeek.tv
Email: CajungeekTV@outlook.com
#Destiny2 #FinalFantasy
shellsharks @shellsharks.com Infosec researcher | more about me @ https://shellsharks.com
@shellsharks@shellsharks.social on Mastodon
Make It Hackin @makeithackin.bsky.social Maker, Hacker, Engineer.
TikTok/YouTube/Snapchat/Instagram and other links below:
https://beacons.ai/MakeItHackin
Mastodon -> Bluesky user lookup/follow app:
https://skeeter.streamlit.app/
Tuta @tuta.com Tuta is a secure email, calendar and drive provider with quantum-safe encryption. Open source & forever free! 🔒
Visit us 👉 tuta.com
#TurnONprivacy
ElissaBeth @elissa.bsky.social Mostly Infosec Posts. Formerly at Brave, other privacy/security startups. Published the anthology "Lean Out" in 2015.
Running a Security Firm, @ me for a consultation.
Raspberry Pi @raspberrypi.com We make very small computers which you can buy from just $4. We are also the literal coolest.
GrapheneOS @grapheneos.org Open source privacy and security focused mobile OS with Android app compatibility.
https://grapheneos.org/
nixCraft @cyberciti.biz Enjoy Linux & Unix-like systems, open-source software, and programming/compsci? Into Sysadmin & DevOps? Follow us to make the most of your IT career! Discover new tools and apps daily, plus a dose of humor ⤵️
https://www.cyberciti.biz
Grafana @grafana.bsky.social Open and composable observability.
https://grafana.com/
Ars Technica @arstechnica.com Original news, reviews, analysis of tech trends, and expert advice on the most fundamental aspects of tech.
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
adafruit @adafruit.com Engineer - Founder of Adafruit - Brooklyn, NY USA - Manufacturer, open-source hardware, certified Minority and Woman-owned Business Enterprise (M/WBE) https://adafruit.com - support https://forums.adafruit.com & order/customer help support@adafruit.com
The Matrix.org Foundation @matrix.org Matrix is an open network for secure, decentralised communication. Please support at matrix.org/support
Killed by Google @killedbygoogle.com Disappointment as a Service by @codyogden.com (they/he)
👋🔪💀
Signal @signal.org Signal is a nonprofit end-to-end encrypted communications app. Privacy isn’t an optional mode, it’s the way Signal works. Every message, every call, every time. https://signal.org/donate/
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. 
ChiefGyk3D @chiefgyk3d.com #Cybersecurity and #InfoSec by Trade and content creator by night for #Tech, Cybersecurity, #IT, #Linux, #AmateurRadio, and #GamingonLinux
Twitch | YouTube | TikTok | Mastodon
CISSP
Socials and Tipping: https://links.chiefgyk3d.com/socials
#OpenSource
TechCrunch @techcrunch.com Technology news and analysis with a focus on founders and startup teams.
Got a tip? http://techcrunch.com/tips
Proton @proton.me Choose a better internet where privacy is the default. Start protecting your personal information online with Proton Mail, Proton VPN, Proton Drive, Proton Pass, Proton Wallet, and Lumo: https://proton.me/
Christopher Vance @cscottvance.bsky.social Mobile Forensics Researcher. iOS nerd. fanboy. Opinions are my own, not my employer.
Brian Carrier @carrier4n6.bsky.social 
@beercow.bsky.social @beercow.bsky.social "Distrust and caution are the parents of security." - Benjamin Franklin
https://malwaremaloney.blogspot.com
Arsenal Recon @arsenalrecon.bsky.social Developers of digital forensics weapons which include Arsenal Image Mounter, Hibernation Recon, LevelDB Recon, HBIN Recon, & Registry Recon. Arm Yourself! #DFIR
Paraben Forensics @parabencorp.bsky.social Digital Forensic technology company providing acquisition and analysis of data from computers, smartphones, cloud, and IoT. 
0sintSir @0sintsir.bsky.social Founder @ OSINord.com | Lead, Cyber Threat Intelligence
John Marquee @johnmarquee.bsky.social Observer. OSINT/IMINT. Geolocation. GIS. Usual caveats.
Alison Killing @alisonkilling.bsky.social Visual investigations at the FT. Architect who won a Pulitzer. 
Zach Everson @zacheverson.com Research director
Trump accountability
Public Citizen
Mobile/Signal 202.804.2744, z_everson@protonmail.com
Although I post selected content from my employer, I do so independently and not at its direction. Views do not necessarily reflect my employer's.
Sanjana Varghese @sanjanamv.bsky.social visual investigations @nytimes / sanjana.varghese@nytimes.com
Abraxas Spa @abraxasspa.bsky.social All-Source Analyst
Saving the spot here
Riley Mellen @rileymellen.bsky.social Visual Investigations reporter for NYT. Let's chat: riley.mellen@nytimes.com, Signal, DMs, etc.
Katie Polglase @katiepolglase.bsky.social Investigative reporter @CNN. Specialist in OSINT and visual investigations.
katie.polglase@cnn.com
IG: @katiepolglase
DM for Signal
https://edition.cnn.com/profiles/katie-polglase
Imogen Piper @imogenpiper.bsky.social Visual Forensics Reporter, The Washington Post 
Meg Kelly @megkelly.bsky.social senior visual forensics reporter
@washingtonpost
tips/ ideas: meg.kelly@washpost.com
usual caveats, dm for whatsapp, signal 
Muyi Xiao @muyixiao.bsky.social Reporter at The New York Times Visual Investigations team. Mostly covering China.
Previously with ChinaFile, Tencent, Reuters.
Allegra Goodwin @allegragoodwin.bsky.social Investigative journo @cnn.com specialising in #osint
went into journalism after watching the devil wears prada, now mostly write about bombs
allegra.goodwin@cnn.com
Dr. Manisha Ganguly @manisha.bsky.social The Guardian's investigations correspondent & visual forensics lead. Currently writing a book. tech x conflict x human rights. friend to cats. manishaganguly.com
Sam Joiner @samjoiner.bsky.social Creative Director at the Financial Times. I lead visual journalism strategy and oversee visual investigations, visual stories, design and pictures.
Peter Andringa @peter.andringa.me Journalist/technologist, @financialtimes.com Visual Investigations
📍London
✉️ peter.andringa@ft.com
🔏 Signal: @peterandringa.01
ft.com/news-tips