Ransomware attacks, such as WannaCry and Petya, in which data is encrypted until a ransom is paid, are trending upward. As noted in the 2018 ISTR, although the number of ransomware families has decreased year over year, the number of ransomware variants has increased by 46 percent. This indicates criminal groups may be innovating less but they remain very productive.
The ISTR report also shows:
- Lock down remote desktop protocol (RDP) access
- Monitor network logs (IPS logs, DNS logs, firewall logs)
- Avoid enabling emcros in Microsoft Office