Internet Security has various protection programs: malware and data theft protection, secure online banking, data encryption at public Wi-Fi hotspots, Anonymous Surfing, protection against tracking cookies and phishing sites, bypassing country restrictions (eg when streaming movies from abroad) ,
Note: The program has no firewall!
F-Secure is running silently in the background, slowing down the system, neither the PC nor the smartphone I could not tell.
As a complement to a good firewall program is recommended in any case, especially because of the possibility of anonymous surfing and the encryption of public hot spots.