A huge number of new viruses appear every year in the world, some of which cause notable harm not only to ordinary people, but also to large firms. About 90 million new viruses were created in the world in 2017, and about 300,000 are created daily.
Attacks using encryption viruses have become a true trend in 2017. Such attacks were recorded a lot, but the loudest of them were WannaCry and NotPetya. Restoring hard disks encrypted with Petya / NotPetya is a tedious, but possible, task.
In mid-May 2017, many companies around the world were attacked by the WannaCry network crypto variant. The Wannacle malware spread across local networks and the Internet by exploiting the CVE-2017-0143 (MS17-010) vulnerability in components of the SMBv1 service (port TCP 445) in Windows operating systems. Since the industrial network is not directly connected to the Internet, and access is provided through the corporate network using NAT, a firewall and a corporate proxy server, which makes it impossible to infect such systems via the Internet. There are typical industrial network configuration errors, which have led to WannaCry infections, according to our data: