Case · 2026-04-17
Opus 4.7 called normal code edits malware (stale safety prompt)
Not cautious. Just haunted by last week's system prompt.
Summary: @ClaudeDevs admitted some users hit Opus 4.7 refusing normal code edits with malware warnings. Bug on their side: older builds applied a stale safety prompt Opus 4.7 does not need. Fix: claude update or relaunch.
Source: @ClaudeDevs · 17 Apr 2026
What landed
@ClaudeDevs stated that some users saw Opus 4.7 refuse normal code edits with “this might be malware” warnings. That was a bug on their side, not the model being carefully cautious.
Cause: older builds applied a stale safety prompt that Opus 4.7 does not need.
Fix: run claude update or relaunch the app.
Why it matters
False malware refusals are over-refusal with a scary label. Users lose trust when ordinary engineering looks like an exploit to the harness.
Satire margin
The model was fine. The costume was last season’s safety text. Update the clothes.
Primary source
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