BREAKING
Anthropic Mythos Breaks Classified Systems
Identified, Not Exploited
Mythos vs Claude Opus 4.6
Cybench Mythos
100
Cybench Opus 4.6
89
CyberGym Mythos
83.1
CyberGym Opus 4.6
66.6
Firefox Mythos
84
Firefox Opus 4.6
15.2
0
yrs
oldest bug
0
%
AISI expert tasks
0
+
critical orgs
Defense vs Misuse
Defense
●
Glasswing partners praise utility
●
Faster vulnerability remediation
Risk
●
US export controls imposed
●
Could be misused by attackers
A New Phase in Cyber Defense
AI NEWS BLITZ
Anthropic's Mythos model found flaws in classified US systems within hours.