Question

any software designed to do something that the user would not wish it to do, hasn’t asked it to do, and often has no knowledge of until it’s too late, including backdoor, virus, worm, Trojan horse; it typically affects the system on which it is run, e.g. by deleting or corrupting files on the local disks

Accepted Answer

malware

Przód	any software designed to do something that the user would not wish it to do, hasn’t asked it to do, and often has no knowledge of until it’s too late, including backdoor, virus, worm, Trojan horse; it typically affects the system on which it is run, e.g. by deleting or corrupting files on the local disks
Tył	malware

Software Designed User Hasn’t Asked Knowledge It’s Late