bad actor
Noun
Meaning
(idiomatic, law) Individual or entity with the prior criminal conviction, or who has been sanctioned by the court or regulator.
(idiomatic) A person with malicious intent.
(idiomatic) Ill-intentioned, mean, ill-tempered person.
Used other than figuratively or idiomatically: see bad, actor.
Source: en.wiktionary.orgSynonyms
Examples
Well, The Times wasn’t trying to single out Reykjavik as a bad actor.
Just because you take out a really bad actor like Soleimani doesn’t mean a good actor, or a good change in policy, comes in his wake.
“There will be severe consequences for any bad actor that tries to abuse the system,” he said.
“This file was not created by, hosted by or sent from Westat, and is likely the result of a bad actor stealing the Westat brand name and logo.
If you mistakenly allow a bad actor to buy something, create a fake account, or compromise a good user's.
It isn’t like Peña’s a bad actor though.