Stuxnet, which infected Iranian systems that were " air gapped" (that is, physically disconnected from the internet), mechanically damaged machinery, yet remained undetected for months.

Stuxnet 病毒感染了伊朗的“气隙”系统（即物理上与互联网断开连接）、机械损坏的机器， 但数月仍未被发现。