![]() ![]() It is often very difficult for users to realize that a trojan is performing harmful actions, as they are usually well camouflaged to keep the system from triggering any notification messages that might arouse the user's suspicions. Critically destructive actions, like erasing files or stealing data.Serious, user-inhibiting actions, like disabling the keyboard or mouse, to.Mildly annoying pranks, like changing desktop icon positions, to. ![]() ImpactÄepending on its creator's intent, a trojan's payload can range from: In the background however, it also silently performs unauthorized actions (its payload), without the user's knowledge or consent. Once installed or opened, the trojan may perform its promised function, or display a decoy document to distract the user. Some trojans (particularly on the Android platform) are actually copies of legitimate apps that have been repackaged or trojanized to include harmful components. To do this, most trojans mimic or entirely copy the style and branding of popular legitimate programs or files. Trojans rely on tricking the user into believing that the program is authentic, so that they unwittingly install the program themselves. When the program is installed or the file is launched however, it will silently perform unauthorized actions (its payload) in the background. ![]() For example, it may appear to be a screensaver, a service pack, an application update and so on. Named after the Trojan Horse of Greek legend, a trojan is a program or file that has, or appears to have, a useful or desirable function to encourage the user to install the program or open the file. ![]()
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