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FEDIDEVS

Awesome Security accounts on Mastodon.

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Member of the Lockdown Systems Collective making @cyd — writing at micahflee.com — author of HACKS, LEAKS, AND REVELATIONS hacksandleaks.com

Last posted 6 days ago
Posts 502
Followers ▼ 52
Following 655
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The Hacker‘s Choice
@[email protected]

The oldest and still active security research group - The Hacker's Choice. (Founded 1995) this is a group account, so different people post! :)

Last posted 1 week ago
Posts 249
Followers ▼ 51
Following 25
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Michał "rysiek" Woźniak · 🇺🇦
@[email protected]

Hacker, activist, free-softie ◈ techie luddite ◈ formerly information security and infrastructure at isnic.is/ and occrp.org/ ◈ my opinions are my own etc.

(he/him)

profile image: drawing of a head and shoulders of a cat-person, in a space suit.

banner image: long-exposure photo of a large tent, brightly illuminated from inside, looking as if it is made of lava

(public toots CC By-SA 4.0 if applicable)

🇪🇺 🇵🇱 · 🇧🇦 🇮🇸 · 🇺🇦

Last posted Less than a day ago
Posts 52,316
Followers ▼ 51
Following 3,886
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iShowCybersecurity🛡️
@[email protected]

Cybersecurity Educator | Ethical Hacker
AI • Cloud • Network Security
Bug Bounty & Real-World Attacks
Helping people stay safe online
ishowcybersecurity.com

Last posted 1 day ago
Posts 138
Followers ▼ 51
Following 3
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David Chisnall (*Now with 50% more sarcasm!*)
@[email protected]

I am Director of System Architecture at SCI Semiconductor and a Visiting Researcher at the University of Cambridge Computer Laboratory. I remain actively involved in the project, where I led the early language / compiler strand of the research, and am the maintainer of the Platform.

I was on the FreeBSD Core Team for two terms, have been an LLVM developer since 2008, am the author of the GNUstep Objective-C runtime (libobjc2 and associated clang support), and am responsible for libcxxrt and the BSD-licensed device tree compiler.

Opinions expressed by me are not necessarily opinions. In all probability they are random ramblings and should be ignored. Failure to ignore may result in severe boredom and / or confusion. Shake well before opening. Keep refrigerated.

Warning: May contain greater than the recommended daily allowance of sarcasm.

No license, implied or explicit, is granted to use any of my posts for training AI models.

Last posted 1 day ago
Posts 11,894
Followers ▼ 50
Following 113
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Founder of DEF CON & Black Hat. Maintainer of infocon.org.

Member of the UK Gov Cybersecurity Advisory Board & The Council on Foreign Relations.

Working to get Hackers and Researchers a seat at the Policy table.

I'm interested in hacking, community, technology, privacy, security policy, and the intersection of civil society. (He/Him) Opinions are my own.

Previously member ONCD (2024-2025), CISA Cyber Security Advisory Council (2021-2025), and DHS Advisory Council (2009-2020)

Last posted 1 day ago
Posts 3,835
Followers ▼ 45
Following 1,141
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Bettina Hartmann
@[email protected]
Last posted 1 day ago
Posts 877
Followers ▼ 43
Following 390
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LWN.net aims to be the premier news and information source for the free software community. We provide comprehensive coverage of development, legal, commercial, and security issues. The LWN.net Weekly Edition is our weekly summary of what has happened in the free software world; our front page offers up-to-the-minute coverage.

Have a news tip for LWN? Drop us a note at [email protected].

Last posted Less than a day ago
Posts 1,038
Followers ▼ 42
Following 12
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DEF CON is the world's most influential hacker conference. Held every year since 1993 in Las Vegas, Nevada, DEF CON is the hub of a global community of hackers, security geeks and curious technophiles.

Last posted 2 days ago
Posts 2,294
Followers ▼ 42
Following 714
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World Wide Web Consortium
@[email protected]

The World Wide Web Consortium (W3C) was established in 1994 by Web inventor Tim Berners-Lee, to develop interoperable standards to lead the Web to its full potential.

We are an international multi-stakeholder community where member organizations, a full-time staff, and the public work together to build a Web based on the principles of accessibility, internationalization, privacy and security.

Please be more curious than critical. Your interactions go to real people who care and do their best 🙏

Last posted 3 days ago
Posts 1,589
Followers ▼ 41
Following 140
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Catalin Cimpanu
@[email protected]

Cybersecurity reporter for Risky Business

Last posted 1 day ago
Posts 129
Followers ▼ 38
Following 426

Displaced Philly boy. Threat hunter. Educator. , rust, python haskell, and javascript. advocate. General in the AI Resistance. Runs @thetaggartinstitute. Made wtfbins.wtf. Not your bro. All opinions my own. Dad.

Pronouns: He/him.

Last posted Less than a day ago
Posts 10,262
Followers ▼ 37
Following 887
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Secure decentralized messaging across all major platforms. Instant and reliable via fast chatmail relays, compatible with classic email providers. Features secure mini web apps for fun and collaboration, end-to-end encrypted and with P2P realtime channels. Security-audited multiple times.

Last posted 2 days ago
Posts 2,617
Followers ▼ 36
Following 613
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Tanya Janca | SheHacksPurple verified verified
@[email protected]

Author of Alice and Bob Learn Secure Coding AND Alice and Bob Learn Application Security!
She/her/lady/woman. shehackspurple.ca

Secure Coding Training and Public Speaking Inquiries & other:
Tanya (at) shehackspurple (dot) ca

, 🌻

Last posted 1 day ago
Posts 4,097
Followers ▼ 36
Following 645
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Manuel 'HonkHase' Atug
@[email protected]

20yrs Sec , Geraffel native, c-base, AG KRITIS, CSCB, , , , OT & IT-Security, working at HiSolutions, Threema.id/X9H873XJ

Last posted 2 days ago
Posts 8,689
Followers ▼ 33
Following 636
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Reporter covering security at Ars Technica. DM me on Signal: DanArs.82.

Last posted 3 days ago
Posts 5,309
Followers ▼ 23
Following 1,163
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Wenn wir vom Feind bekämpft werden, dann ist das gut. EN/DE. Hacker. Co-Founder & CEO at infosec.exchange/@modzero and chaos.social/@modone. Formerly known as @[email protected]

Achso: bsky.app/profile/ths.ch

Last posted 6 days ago
Posts 91
Followers ▼ 23
Following 165
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Creator of @haveibeenpwned. Microsoft Regional Director and MVP. Pluralsight author. Online security, technology and “The Cloud”. Australian.

Last posted 3 days ago
Posts 1,198
Followers ▼ 23
Following 54
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Matthew Garrett
@[email protected]

Former biologist. Actual PhD in genetics. Security at Nvidia, OS security teaching at ischool.berkeley.edu. Blog: codon.org.uk/~mjg59/blog . He/him.

Last posted 1 day ago
Posts 6,120
Followers ▼ 22
Following 167
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NGI Zero open source funding
@[email protected]

NGI Zero is a grant making program for R&D of free and open source technologies, coordinated by @nlnet in collab with @fsfe @APC @ps @techcultivation @ros @fsi @nixos_org @ISOCSwitzerland @apell @ow2 Tolerant Networks HAN Uni Brno Uni & OFE | Delivers technology for the
Account = run by NLnet
IMG: C. Jeschke | Unsplash

Last posted 5 days ago
Posts 1,801
Followers ▼ 21
Following 2,209
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Steve Ragan (SteveD3) verified
@[email protected]

Father. Grandpa. Geek. Former journalist.
Hacker.
Security researcher.
Board of directors @CircleCityCon (RIP)
CMO @BSidesLV
Member: @CuratedIntel

Last posted 5 days ago
Posts 572
Followers ▼ 21
Following 2,485