<P> Trojan horses are generally spread by some form of social engineering , for example where a user is duped into executing an e-mail attachment disguised to be unsuspicious , ( e.g. , a routine form to be filled in ) , or by drive - by download . Although their payload can be anything , many modern forms act as a backdoor , contacting a controller which can then have unauthorized access to the affected computer . While Trojan horses and backdoors are not easily detectable by themselves , computers may appear to run slower due to heavy processor or network usage . </P>
<P> Trojan horses are generally spread by some form of social engineering , for example where a user is duped into executing an e-mail attachment disguised to be unsuspicious , ( e.g. , a routine form to be filled in ) , or by drive - by download . Although their payload can be anything , many modern forms act as a backdoor , contacting a controller which can then have unauthorized access to the affected computer . While Trojan horses and backdoors are not easily detectable by themselves , computers may appear to run slower due to heavy processor or network usage . </P>
malware that essentially is a form of social engineering
malware that essentially is a form of social engineering
Trojan horses
Trojan horses