No kidnapping, no ransom

Ransomware is still one of the most lucrative weapons in a cybercriminal’s arsenal. This kind of cybercrime encrypts the files on a computer, and blocks access to them until the required ransom is received, generally in the form of bitcoin, an untraceable virtual cryptocurrency.

The total cost of this Trojan in 2017 was around $5 billion, a 350% increase compared to the previous year, making it not only the most sophisticated type of cyberattack, but also the one with highest impact.