The law enforcement action focused on an organization that sells phishing services to less-skilled crooks.

Success is hard to measure, police say.

Emotet is a microcosm for a much bigger problem facing the FBI.

The FBI and European police announced a sting against the Safe-Inet, which had marketed "bulletproof hosting" to cybercrime networks.

Since emerging in mid-September, Egregor has reportedly been used in multiple high-profile ransomware attacks.

The study also found that several countries that are not currently considered conventional cyber powers are rising on the world stage.