Criminal ransomware techniques have evolved in the last few years and are now even harder to detect – and more damaging if they get through network defenses.
One particular insidious type of new ransomware is from a gang known as Conti. The malware has so far mainly impacted victims in North America and Western Europe.
Researchers at Sophos are keeping a close eye on Conti. Chester Wisniewski, a principal research scientist with Sophos, says the techniques cyber criminals use follow similar steps to many previous types of ransomware.