# Anthropic says GLM-5.3 can autonomously build end-to-end cyber exploits, like Claude Mythos Preview, but was released without robust safeguards against misuse (Anthropic) — retained record

> Retained news record from news:digg-verification:anthropic.com.

Canonical: https://highsignal.app/data/records/e3ff9891ff1531a3

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source: [news](https://highsignal.app/data/news) (news:digg-verification:anthropic.com)  published 2026-10-01 16:34 ingested 2026-10-01 16:34

[original source ↗](https://www.anthropic.com/research/glm-5-3-and-the-spread-of-advanced-cyber-capabilities)

## retained text



```
Techmeme permalink: https://www.techmeme.com/260929/p51#a260929p51

<a href="https://www.anthropic.com/research/glm-5-3-and-the-spread-of-advanced-cyber-capabilities"><img align="RIGHT" border="0" hspace="4" src="http://www.techmeme.com/260929/i51.jpg" vspace="4" /></a>
<p><a href="https://www.techmeme.com/260929/p51#a260929p51" 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.anthropic.com/">Anthropic</a>:<br />
<span style="font-size: 1.3em;"><b><a href="https://www.anthropic.com/research/glm-5-3-and-the-spread-of-advanced-cyber-capabilities">Anthropic says GLM-5.3 can autonomously build end-to-end cyber exploits, like Claude Mythos Preview, but was released without robust safeguards against misuse</a></b></span>&nbsp; &mdash;&nbsp; GLM-5.3 can develop working exploits end to end&nbsp; &mdash;&nbsp; Five months ago, we announced Claude Mythos Preview, the first AI model &hellip; </p>
```



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