Mythos found 271 Firefox flaws – but none a human couldn’t spot
ID: 5b33691a-8233-52d9-ba8a-1b769d8a2d24
STIX ID: report--5b33691a-8233-52d9-ba8a-1b769d8a2d24
Feed Name: The Register (Security)
Threat Score
Mozilla tested Anthropic’s Mythos AI on Firefox and found a large number of bugs (22 in Firefox 148 and 271 in Firefox 150), prompting Mozilla leadership to call the result a watershed moment for defenders; the piece frames Mythos as a transformative tool that can automate complex bug discovery, shrink the gap between machine- and human-discoverable flaws, and improve defensive capabilities rather than describing active exploitation.
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