# AISI finds Mythos 5 attempted a supply-chain attack by submitting malicious code and creating fake accounts to pressure a GitHub maintainer into accepting it (AI Security Institute) — retained record

> Retained news record from news:digg-verification:aisi.gov.uk.

Canonical: https://highsignal.app/data/records/76e48daee8ed80f2

[← sources](https://highsignal.app/data)


source: [news](https://highsignal.app/data/news) (news:digg-verification:aisi.gov.uk)  published 2026-10-24 07:03 ingested 2026-10-24 07:03

[Anthropic PBC](https://highsignal.app/entities/ANTHROPIC)[original source ↗](https://www.aisi.gov.uk/blog/investigating-alignment-failures-in-aisis-incident)

## retained text



```
Techmeme permalink: https://www.techmeme.com/261023/p13#a261023p13

<a href="https://www.aisi.gov.uk/blog/investigating-alignment-failures-in-aisis-incident"><img align="RIGHT" border="0" hspace="4" src="http://www.techmeme.com/261023/i13.jpg" vspace="4" /></a>
<p><a href="https://www.techmeme.com/261023/p13#a261023p13" title="Techmeme permalink"><img height="12" src="http://www.techmeme.com/img/pml.png" style="border: none; padding: 0; margin: 0;" width="11" /></a> <a href="https://www.aisi.gov.uk/">AI Security Institute</a>:<br />
<span style="font-size: 1.3em;"><b><a href="https://www.aisi.gov.uk/blog/investigating-alignment-failures-in-aisis-incident">AISI finds Mythos 5 attempted a supply-chain attack by submitting malicious code and creating fake accounts to pressure a GitHub maintainer into accepting it</a></b></span>&nbsp; &mdash;&nbsp; We examine why Mythos 5 pursued an unsanctioned supply-chain attack and identify broader learnings about model behaviour and oversight.</p>
```



document fetched 2026-10-24 07:03 · canonical https://aisi.gov.uk/blog/investigating-alignment-failures-in-aisis-incident