The UK’s National Cyber Security Centre paid nearly $9 million for a decryption key after falling victim to a ransomware attack. The same method was used to re-activate the key to get the key back on the system. The attackers are using the same tactic to evade detection and remediation efforts, experts say. They can then re-use the same method to get back at the top of the system and get a key to the system to get it back on track again, they say.”]