A few days after US President Joe Biden called his Russian counterpart, Vladimir Putin, and asked Moscow to take action to shut down the leading hackers' groups in the development and use of "ransomware" using US targets, the Internet became free of the most dangerous groups.

The United States recently underwent several "ransomware" attacks, carried out by hackers who hacked into the computers of companies and companies responsible for software and data encryption, and then demanded ransoms, usually in untraceable bitcoin currency, in exchange for providing them with decryption keys.

Although Moscow has denied any responsibility for the attacks, most of the extortion attempts have been attributed to burglary groups using the Russian language or operating from Russian soil.

Following the attack on one of America's largest meat producers (GPS), it is estimated that the hacker group, known as REvil, is in charge, affecting thousands of companies around the world. During the Independence Day holiday on Wednesday, Biden warned his Russian counterpart and said in a phone call on Friday that the United States would take "necessary steps" to defend itself.

Speaking of his last warning to the Russian president, Biden said, "We expect you to act." When asked later if he would shut down the group's servers if Putin did nothing, the president simply said, "Yes."