For example with the WannaCry ransomware or Petya / Not-Petya ransomware . These have a worm component so that the malware can replicate and spread through back doors in other systems in the network.
For example with the WannaCry ransomware or Petya / Not-Petya ransomware . These have a worm component so that the malware can replicate and spread through back doors in other systems in the network.