Cryptographic & Security Engineering

Previously: Founding & Lead iOS Engineer @signalapp, @Bellingcat #OSINT contributor

Tooting on all things #cryptography, #lithography, #energy, #security, #mobility, #climate, European #aerospace and federalism.

Senior #Linux admin and #DataProtection Officer pivoting into #infosec and #ethicalhacking

🐧 Software Engineer | 🛡️ Cyber Security Specialist | Divulgatore Scientifico 💻

Independent professional supporting public and public-private collaboration. Drawn to initiatives that strengthen (digital) sustainability, autonomy and security. Proponent of open standards and free and open source software.

Currently with @internet_nl, promoting #IPv6, #DNSSEC, #HTTPS, #securitytxt, #DMARC, #DKIM, #SPF, #STARTTLS, #DANE, and #RPKI adoption.

Perfectly happy on mastodon.social, except for one thing: https://mastodon.social/@rickvanrooijen/116013230833226667.

25-year telecom security veteran. Building @RelayShield — real-time SIM swap detection, infostealer credential monitoring, and domain threat intelligence via API. Watching the Telegram channels where your credentials are being sold. Security Insights: https://t.me/RelayShield

DevOps engineer • Arch Linux user • Hardware hacker

Building SecureGen: open-source hardware 2FA device on ESP32 with 8-layer security architecture. AES-256 encryption, BLE keyboard, completely offline.

Passionate about privacy, verifiable security, and DIY builds.

ESP32 • Embedded • Linux • Automation • Security

Everything MIT licensed 🔓

Waarom zit ik zo veel op Mastodon?

Hobbyfotograaf: Pixelfed: @harld

Autodelete alles na 1 maand.

Oi! :3 :3 :3

#️⃣CatSalad

"I bet another account would fix me."
–🐈🥗

Director, Security & Engineering at HMD Secure

I'm a scientist, developer, tinkerer. Toots on life reflections, news reactions, and experimental notes 👨‍🔬

#Linux #Fedora

Developer, DevOps Engineer and ethical hacker. CEH, CASE Java, CCSE, CPSA Foundation Level.
Loves to cook and eat and tinker around. Likes manga, anime, taichiquan and computer science stuff.
He/him
#infosec #devops #proasyl #climatejustice #nonazis #lgbtqAlly

"Esistono senza il consenso di nessuno. Sono odiati, braccati e perseguitati. Vivono in silenziosa disperazione tra il sudiciume. E tuttavia sono in grado di mettere in ginocchio intere civiltà. Se sei sporco, insignificante e senza amore, allora i ratti saranno il tuo modello." Banksy

Underground Culture, Gnu/Linux, Cybersecurity, Debian Lover, Opensource, Software Libero, ma parlo di tutto ciò che attira la mia attenzione...🐀

Creatore di NextRedOS 🐀🛡️🇪🇺🇮🇹
https://www.nextred.it/web/link/

#InfoSec student. Former Web #Accessibility auditor. I aspire to be an active participant in the effort to keep people's personal information secure. #NeverTrump since day one. Sports fan. Devourer of #sci-fi and #Fantasy. I am #Blind, #autistic, and have #ADHD. Prolific reposter. Boosts are often but not always indorsements.

I run the toxicity-free, happy home for otaku, https://urusai.social
If you're into anime, manga, games, light novels, etc, and want to see more weeb stuff on your TL, signups are open!

Sr. "Dishonesty Unmasking Agent" @ PlayStation, ex-Bungie #GameSecIsNotInfoSec

Gamer, former esports commentator, Kingdom Hearts fanboy

Opinions are *definitely* my own

[ he/him ]

Antiguamente @asperaprocella y @asfilippini en Twitter. Mujer, madre y argentina. Atiendo boludos.

Ni olvido ni perdón. ¡No en mi nombre!

Si te *huelo* la menor conspiranoia u otra patología cognitiva la conversación se corta en seco y la relación también. Las ideas se examinan a la luz de la evidencia. O se guarda silencio.

If you "vibe check", congratulations! You've found the source of all the "bad vibes". Now keep your health and go away.

Foster parents.☺ modern security and resilience 🛡 law enforcement: NeuralTrace, ForensicAI_X🤖🧠 astrobiology: microorganisms (biosignature)🦠🧬

By day, I work in SharePoint/Power Platform development.

For fun, I enjoy fiddling with my #aquarium, riding my #ebike, tinkering around with #HomeAssistant, playing #Factorio, going to #MetalShows, #Grilling, and reading about spaceships fighting.

We have five cats, which are henceforth referred to as The Goblins.

📍 Richmond, VA, US

GrapheneOS/Linux enthusiast, interested in all things security.
Favorite games are TWEWY, Myst, FFXIV
Learning MTG with friends!

he/his
Director of Information Security at 4DMedical.
I work primarily in #infosec, #IT, and #SaaS infrastructure.
ex #USDS (fired by #DOGE)
Dad, old-school hacker, Righteous Indignation Man. Opinions are my own. Follow my blog at @jikblog.
#COVID #CovidIsNotOver #USPol #MAPol #BosPoli #Boston #MA #politics #linux #FOSS #OpenSource #ConsumerActivism #privacy #programmer #hacker #fedi22 #resist https://justmytoots.com/@jik@federate.social

Old school IT Technician and Cyber Janitor.
Interests in InfoSEC, History, Physics and SciFi.

Anti-fascist. Wacky Improvisation and Drive by Philosophy Specialist.

The header image is a panaroma photograph of the view from the summit of Eryri on a clear sunny day. That's rare enough to be noteworthy 🙂

My avatar is a high resolution scan of a 120 film negative version of my portrait. You're not missing anything of artistic merit.

SW craftsperson & technology enthusiast, emphasis on security #SpielerischeSicherheit.

Co-organiser of Open Security Conference @OSCo

Private here. Working in the intersection of #informationSecurity, #ITSecurity, #OTSecurity, #SecureDevelopment, #ProductSecurity with a dose of #CriticalInfrastructure mixed in.

also at https://bookwyrm.social/user/realn2s

(working for @SMAsolar)
Opinions are my own, not my employer’s
#BLM #nonazis #NoAfD #IamAntifa
#TranRightsAreHumanRights

No #AltText no boost