Like a lake being drained, there are skeletons in the depths of software and data that are soon to be revealed. Bugs, backdoors; embezzlement, fraud. But also treasures. Lost texts, pennies from heaven.
We partnered with Mozilla to test Claude's ability to find security vulnerabilities in Firefox.
Opus 4.6 found 22 vulnerabilities in just two weeks. Of these, 14 were high-severity, representing a fifth of all high-severity bugs Mozilla remediated in 2025.