Russia's most aggressive ransomware group REvil disappears suddenly

It's unclear who made that happen

Just days after President Biden demanded that President Vladimir V Putin of Russia shut down ransomware groups attacking American targets, the most aggressive of the groups suddenly went off-line early Tuesday.
 

The mystery is who made it happen.
 

The group is called REvil, short for “Ransomware evil.” Two weeks after Mr. Biden and Mr. Putin met in Geneva last month, REvil took credit for a hack that affected thousands of businesses around the world over the July 4 holiday.
 

That latest attack led to Mr. Biden’s ultimatum in a phone call on Friday to the Russian president. Later, Mr. Biden