How can I remove the message 'BrowserActivityfld' on my Mac?
[Re-Titled by Moderator]
MacBook Air 13″, macOS 12.7
Sound like the "Search Marquis" / "Search Baron" / etc is making the rounds again
Especially as related to error message " will damage your computer.
Removing "Search Marquis" / "Search Baron… - Apple Community
Refer to a similar Malware Warning and refer to specific explanation and method to remove from @John Galt