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On Anthropic’s Mythos Preview and Project Glasswing

ID: c4198599-ac39-51b2-bfea-f59d0d455da7

STIX ID: report--c4198599-ac39-51b2-bfea-f59d0d455da7

Feed Name: Schneier on Security

Threat Score
50/100

Date Published: 2026-04-13

Date Updated: 2026-04-19

Author: Bruce Schneier

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The article analyzes Anthropic's Claude Mythos Preview and Project Glasswing, arguing that while Anthropic's announcement functions partly as PR, new large models are demonstrably better at finding and operationalizing software vulnerabilities; defenders currently have an edge because discovery is easier than exploitation, but that advantage may shrink as models become more capable, creating urgent need for preparedness and mitigation.

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