# Claude Code flags XMRig miner on developer’s Mac

> A developer says Claude Code spotted XMRig using about 1,175% CPU on an overheating Mac. The account does not explain how the miner got there.

Oossa · 2026-10-19 · https://oossa.com/en/claude-code-flags-xmrig-miner-on-developer-s-mac

A developer using Anthropic’s Claude Code to build a temperature-monitoring app says the coding agent warned that a crypto miner was running on their Mac. The agent identified the program as XMRig and reported it was using about 1,175% of the CPU, roughly 12 cores.

The developer, who posted as UntilHEX, said the miner explained why the Mac had been running poorly. The report does not say how the software was installed, whether it was removed, or whether Claude Code took any action beyond alerting the user.

## The facts

- The agent identified the process as XMRig, a cryptocurrency-mining program.
- It reported CPU use of about 1,175%, or roughly 12 cores.

## Why it matters

For Mac developers, the report shows a coding assistant may flag a resource-heavy process, but it does not establish how reliably it can detect malware or remove it.

## Sources & references

1. [Claude Code AI agent caught a crypto miner hiding on a developer’s overheating Mac](https://www.tomshardware.com/tech-industry/cryptomining/claude-code-ai-agent-caught-a-crypto-miner-hiding-on-a-developers-overheating-mac-xmrig-task-was-hogging-about-1175-percent-cpu-roughly-12-cores-pushing-temps-to-112-degrees) – Tom's Hardware, 2026-10-19

Last updated: 2026-10-19