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FEDIDEVS

4010 awesome Security accounts on Mastodon.

security Security
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Have I Been Pwned
@[email protected]

Check if you have an email address or password that has been compromised in a data breach. Created and maintained by @troyhunt

Last posted 5 days ago
Posts 252
Followers ▼ 17,193
Following 1
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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 1,869
Followers ▼ 16,720
Following 697
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Hacker, CEO of SocialProof Security: security awareness/social engineering training, vids, talks, tests, 3X @Defcon🥈, Chair of the WISP board, Tech Advisory Council for @Cisagov

Last posted 5 days ago
Posts 452
Followers ▼ 16,685
Following 1,461
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Zack Whittaker
@[email protected]

Security editor, TechCrunch
Email: [email protected]
Signal: zackwhittaker.1337
New York, NY

Last posted 1 day ago
Posts 2,498
Followers ▼ 16,355
Following 420
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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 1 day ago
Posts 46,024
Followers ▼ 15,650
Following 3,816
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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: mjg59.dreamwidth.org. He/him.

Last posted 1 day ago
Posts 5,054
Followers ▼ 15,351
Following 170
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Reporter covering security at Ars Technica. DM me on Signal: DanArs.82.

Last posted 3 days ago
Posts 4,723
Followers ▼ 14,666
Following 1,130
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Graham Cluley
@[email protected]

Computer chap. Public speaker, blogger, fan since 1972. Author of Jacaranda Jim and Humbug games. Co-host of "The AI FIx" and @smashingsecurity . Needs haircut.


He/Him/His

Last posted 1 day ago
Posts 1,646
Followers ▼ 13,511
Following 637
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I know a thing or two about AirPods. App developer, security researcher. 🏳️‍🌈🧩

Last posted 1 day ago
Posts 718
Followers ▼ 13,316
Following 260
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Privacy Guides
@[email protected]

Privacy Guides is a socially motivated website that provides information for protecting your data security and privacy.

We are a non-profit project with a mission to inform the public about the value of digital privacy, and about global government initiatives which aim to monitor your online activity. Our website is free of advertisements and not affiliated with any of the listed providers.

Last posted 6 days ago
Posts 337
Followers ▼ 12,151
Following 16
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The Internet's Observatory: Tracking cybersecurity and digital governance • connectivity and democracy • tools and policy for change • [email protected]

Last posted 2 days ago
Posts 835
Followers ▼ 11,961
Following 0
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Journalist - cybersecurity/national security. Author COUNTDOWN TO ZERO DAY: Stuxnet and the Launch of the World's First Digital Weapon. Speaker/Signal. Newsletter is called Zero Day. Find it here: zetter-zeroday.com/. Become a paid subscriber to help support my independent journalism.

Last posted 3 weeks ago
Posts 365
Followers ▼ 11,958
Following 530
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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 1 day ago
Posts 6,990
Followers ▼ 11,185
Following 583
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Founder of DEF CON & Black Hat. 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 3,170
Followers ▼ 11,153
Following 1,117
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Tarah Wheeler 🖖♦️
@[email protected]

♦️ CEO of Red Queen Dynamics♦️EFF Board Of Directors♦️US/UK Fulbright Scholar in Cyber Security♦️Senior Fellow, Global Cyber Policy at the Council on Foreign Relations. ♦️ Formerly Harvard, Brookings, Splunk, Symantec. ♦️she/her curmudgienne♦️standard disclaimer regarding personal opinions.♦️Searchable. t AT tarah DOT org

Last posted 4 days ago
Posts 1,585
Followers ▼ 10,293
Following 54
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D̒͂̕ᵈăᵃn̕ᶰ Ť̾̾̓͐͒͠ᵗe͗̑́̋̂́͡ᵉn̅ᶰtᵗl̀̓͘ᶫe̓̒̂̚ᵉrʳ
:: Founder, Phobos Group
:: Quad Flooper :: Scoville Addict
:: Public Speaker :: food pornographer
:: Twitter Alum (2011-2012)
:: security longhair :: tattoo'ed nerd

<script>alert(1)</script>
'>"></div><blink><marquee>visit hax.lol for a good time


Last posted Less than a day ago
Posts 42,603
Followers ▼ 9,393
Following 663
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Techlore empowers individuals with practical digital privacy knowledge, security tools, and advocacy resources. Discover how to protect your online data and regain control of your digital identity.

Last posted 3 days ago
Posts 1,186
Followers ▼ 9,342
Following 53
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Justin Ling🆒️
@[email protected]

Freelance investigative journalist — national security, disinformation, conspiracy theories, extremism, Russia/Ukraine, policing. 🕵‍♂️

Contributor to the Toronto Star, WIRED, The Walrus, Foreign Policy

Last posted 1 week ago
Posts 1,371
Followers ▼ 9,000
Following 871
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Jeremi M Gosney verified
@[email protected]

Distinguished Engineer at GEICO Cyber. Your friendly neighborhood password cracker. Member of blobcatrainbow and the core development team. I also help run , @BSidesLV, and @hushcon.

Former CEO of Terahash, creator of the Brutalis. Author of hmac-bcrypt and Pufferfish2 🐡. OIF/OEF veteran 🪖 and former 97E 🕵🏼‍♂️. Married to @baybedoll💍 and living in Texas 🤠

Primarily interested in , , , and , , , computing, , , , development, , , , . linux fedora redhat ubuntu terminal rust

Last posted 1 month ago
Posts 1,055
Followers ▼ 8,455
Following 799
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Kevin Rothrock
@[email protected]

hyper-professional guy, managing editor of @meduza_en, ugly American based in Portland, Oregon (USA). Signal: @KevinRothrock.01

Last posted 1 day ago
Posts 11,270
Followers ▼ 8,421
Following 78