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.
Public Key
npub12ezphvhtdltkzhl2kanu34ck5s3lt49ykeewn8vqsptpglm9w5hsger3zxProfile Code
nprofile1qqs9v3qmkt4kl4mptl4twe7g6ut2ggl46jjtvuhfnkqgq4s50ajh2tcpz4mhxue69uhhyetvv9ujuerfw36x7tnsw43qz9thwden5te0wfjkccte9ekk7um5wgh8qatzfxc0es
Published at
2026-08-18T20:20:59ZEvent JSON
{
"id": "66acebea142ded80e6ed7df9b2248f77dececd4613a5558ddcdd9ed08208c3e0",
"pubkey": "56441bb2eb6fd7615feab767c8d716a423f5d4a4b672e99d808056147f65752f",
"created_at": 1787084459,
"kind": 0,
"tags": [
[
"proxy",
"https://mastodon.social/users/fj",
"activitypub"
],
[
"client",
"Mostr",
"31990:6be38f8c63df7dbf84db7ec4a6e6fbbd8d19dca3b980efad18585c46f04b26f9:mostr",
"wss://relay.ditto.pub"
]
],
"content": "{\"name\":\"Frédéric Jacobs\",\"about\":\"Cryptographic \u0026 Security Engineering\\n\\nPreviously: Founding \u0026 Lead iOS Engineer @signalapp, @Bellingcat #OSINT contributor\\n\\nTooting on all things #cryptography, #lithography, #energy, #security, #mobility, #climate, European #aerospace and federalism.\",\"picture\":\"https://files.mastodon.social/accounts/avatars/000/013/653/original/2e3a5fe3f184c298.jpeg\",\"banner\":\"https://files.mastodon.social/accounts/headers/000/013/653/original/a407e5cc501ef1c5.png\",\"nip05\":\"[email protected]\",\"fields\":[[\"Website\",\"https://www.fredericjacobs.com\"],[\"Readings\",\"@[email protected]\"],[\"127.0.0.1\",\"Lausanne, 🇨🇭\"],[\"Lang\",\"[“en_us”, “fr_ch”, “de_de”, “nl_be”] (Three dots on profile to choose posts in which language you're subscribed to)\"]]}",
"sig": "93b4e78ebdb098bc8bdd0cfc5d81a599fab8e97082cc626c8a7710777af07c81bce70bda5321ba0a8ffbb683008bfc63ab60ff881d5a1a57e874d39ffa9a211d"
}