Assertion: trojan | /r/HasProperty | difficult
Facets:
value: because of two reasons
type: CAUSE
value: often
type: DEGREE
value: very
type: DEGREE
Source sentences:
text: If a trojan is installed onto a system, it is often very difficult for users to realize they are performing any harmful actions, as these are usually well camouflaged to keep the system from triggering any notification messages that might arouse the user's suspicions.
text: Trojans are difficult to deal with because of two reasons: they are easy to create and spread.