Police in Ukraine arrested a 32-year-old man they say was the "leader" of a group, as well as "his four most active accomplices," according to a Google…

Authorities arrested the suspect wanted for his alleged role in one of the most prolific ransomware crews in the world.

Botnets have proven hard to permanently eradicate in the past, suggesting Europol's success disabling the FluBot malware could be fleeting.

RaidForums boasted at one point of having close to 10 billion pieces of PII for sale, making it one of the biggest destinations for cybercriminals.

Europol said the service was used as part of malware distribution, ransomware operations and other cybercrime activities.

The arrest marks a potentially interesting example of a ransomware operator working outside of the traditional affiliate model, an expert says.

Law enforcement seized over $31.6 million in cash and virtual currencies.

Outsiders suggested REvil was the target of the police said, which involved the FBI.

The bust is the latest evidence hinting at the extent to which established organized crime groups are adopting hacking methods.

It's a common, and often effective, tactic.