Trojans that enter the system through social engineering are first on the list when it comes to the number of some types of attacks. Users usually pick up the infection on obscure websites where they recklessly accept the warning that they are “infected” and activate a fake antivirus. In this way, millions of hacking attacks are carried out each year, which puts the trojans in an unsurpassed advantage over other hacker attacks. The best protection against this type of attack is education and information about modern forms of threats. In organisations, this problem is somehow solved by filtering sites that can be accessed from a computer in the local network.