You can also before you purchase the paid version.
That said, every free antivirus is going to include a few frustrating limitations.
Trojans look like other files with extensions like.
F-Secure Antivirus nowadays are already getting better each time.
Built from the ground upwards with your security in mind, Internet Security offers 360° protection by combining powerful Antivirus protection, an enterprise class packet filtering firewall, advanced host intrusion prevention and automatic sandboxing of unknown files.
Although Microsoft has Windows Defender built into Windows 10, not all antivirus programs are created equal.