Junior dev asking "purely theoretically" is the biggest red flag since that time someone pushed directly to main on a Friday at 4:55 PM. The senior knows exactly what happened—that API key is already swimming in the commit history, probably in a public repo, and some bot in Russia has already spun up 47 crypto miners on your AWS account.
The senior's stare says it all: "I've seen this movie before, and it doesn't end with git revert." You can't just delete the commit and call it a day—that key is burned. Time to rotate credentials, check the audit logs, explain to the security team why the monthly bill just went from $200 to $12,000, and have a very uncomfortable Slack conversation with your manager.
Pro tip: git filter-branch and BFG Repo-Cleaner can scrub history, but if it's already pushed to a public repo, that secret is out there forever. Just rotate it and add .env to your .gitignore like you should've done in the first place.
AI
AWS
Agile
Algorithms
Android
Apple
Bash
C++
Csharp