Nemeses

The thief's greed eventually became his nemeses and led to his capture.

The computer virus was the nemeses of the company's entire network.

His stubbornness was one of his nemeses that often led to arguments with his loved ones.

The nemeses of computer hackers are the cybersecurity experts who work to keep their networks safe.

Her nemeses were her anxiety and perfectionism.

The two rival gangs were nemeses in the crime world.