The detection rate for malicious files grew by 5.2% in 2020 , according to data from the Kaspersky Security Bulletin: Annual Statistics Report .

The Russian company discovered an average of 360,000 new files of this type per day, 18,000 more than in 2019 and 14,000 more than in 2018.

The vast majority (6 out of 10) correspond to Trojans , which have grown by 40.5%. Kaspersky has also detected an increase in back doors and worms . Meanwhile, adware adware or malware has subsided, with a 35% year-on-year drop.

Cybercriminals have stopped targeting Android-based mobile terminals to focus on Windows-based laptops and desktops . About 90% of the detections occurred through PE files, which is a format specific to Microsoft software. This has to do with the coronavirus pandemic and the fact that millions of people have stayed home, working or studying.

«It is difficult to know if the attackers were more active or if our solutions detected more malicious files simply due to increased activity,» confesses Denis Staforkin, security expert at Kaspersky. «It could be a combination of both.»

«Either way, we have seen a notable increase in the number of new malicious files this year,» he notes, «and this is most likely to continue through 2021 , as employees they continue to work from home. ”