That Time Ken Thompson Wrote a Backdoor into the C Compiler

｢ he was expected like other Turing winners to write a paper that would be published in the ACM Computer Journal. What he ended up submitting was a paper about "the cutest program [he] ever wrote"-- a sneaky undetectable self-reproducing "Trojan horse" backdoor in the C compiler that would allow him to log into affected machines as any user ｣

https://micahkepe.com/blog/thompson-trojan-horse/

#c #retrocomputing #backdoor

That Time Ken Thompson Wrote a Backdoor into the C Compiler

｢ he was expected like other Turing winners to write a paper that would be published in the ACM Computer Journal. What he ended up submitting was a paper about "the cutest program [he] ever wrote"-- a sneaky undetectable self-reproducing "Trojan horse" backdoor in the C compiler that would allow him to log into affected machines as any user ｣

https://micahkepe.com/blog/thompson-trojan-horse/

#c #retrocomputing #backdoor

Anthropic: "In a joint study with the UK AI Security Institute and the Alan Turing Institute, we found that as few as 250 malicious documents can produce a "backdoor" vulnerability in a large language model—regardless of model size or training data volume. "

https://www.anthropic.com/research/small-samples-poison

#cybersecurity #backdoor #datapoisoning #llm #ai

Anthropic: "In a joint study with the UK AI Security Institute and the Alan Turing Institute, we found that as few as 250 malicious documents can produce a "backdoor" vulnerability in a large language model—regardless of model size or training data volume. "

https://www.anthropic.com/research/small-samples-poison

#cybersecurity #backdoor #datapoisoning #llm #ai

We've just fought #ChatControl - now Ireland 🇮🇪 wants its own backdoor law. 🔓

But we, together with ~40 orgs, are saying no.

#NoToBackdoors 💪

Read our open letter to Ireland: 👉 https://www.globalencryption.org/2025/10/open-letter-irish-communications-interception-and-lawful-access-bill/

#backdoor #encryption #privacy #security

We've just fought #ChatControl - now Ireland 🇮🇪 wants its own backdoor law. 🔓

But we, together with ~40 orgs, are saying no.

#NoToBackdoors 💪

Read our open letter to Ireland: 👉 https://www.globalencryption.org/2025/10/open-letter-irish-communications-interception-and-lawful-access-bill/

#backdoor #encryption #privacy #security

Toda la mañana de viernes pringado por una infección por descargarse de Internet cualquier cosa, ocho equipos con backdoor, tres con exfiltración. Y lo que me queda.

Importante: si estáis buscando un editor de ficheros pdf NO DESCARGUÉIS "PDF EDITOR" DE APPSUITES. Que os deja el ordenador pringado del todo.

#ciberseguridad #pdfeditor #backdoor

¿QUÉ PASA? 🇧🇷 🇲🇽 😄⚽

Políticos mexicanos y brasileños: unos roban con sombrero, otros con samba, pero todos con gracia. Son tan buenos actuando que deberían estar en Netflix, no en el Congreso.

https://www.youtube.com/watch?v=KXJgUw-AdW0

#Backdoor#Mexico#Brasil#Brazil#Humor#Funny

"backdoor" is the new "virus" in overused and wrongly applied terminology.

Over at the facesite I came across a piece (Not linking to that sh*t) about "Linux malware PLAGUE" which describes a piece of software that is useful post-compromise to whoever wants to hide their tracks.

Not a backdoor because it requires already established access. #cybercrime #backdoor #security #linux #fluff

"backdoor" is the new "virus" in overused and wrongly applied terminology.

Over at the facesite I came across a piece (Not linking to that sh*t) about "Linux malware PLAGUE" which describes a piece of software that is useful post-compromise to whoever wants to hide their tracks.

Not a backdoor because it requires already established access. #cybercrime #backdoor #security #linux #fluff

Canada wants to #backdoor #encryption.

But we are saying no.

#NoToBackdoors 💪

Read our comment on Canada's C-2 Bill: 👉 https://tuta.com/blog/canada-bill-c2-surveillance

Canada wants to #backdoor #encryption.

But we are saying no.

#NoToBackdoors 💪

Read our comment on Canada's C-2 Bill: 👉 https://tuta.com/blog/canada-bill-c2-surveillance