A Redditor used Claude Code AI to build a M a c temperature monitor app and found that the machine was running much hotter than expected. Claude reported that it found a crypto miner using more than 1,000% of the CPU cycles – then added an unprompted comment denying having installed it.

Some Redditors were understandably suspicious of Claude’s spontaneous comment that it wasn’t responsible for installing the rogue app …

Redditor UntilHEX shared the Claude report on the reason for the overheating (via Macworld ).

“Most important: your Mac is running a cryptominer that I didn’t put there. While checking sensor accuracy | saw xmrig using about 1175% CPU, roughly 12 cores.…