Definition: An annoyance is a piece of malware which leans more toward mischievous than malicious. These often come as email attachments from friends who think it will be funny to pull a prank on you. Executing files such as this, often leads to silly, but non-destructive, actions such as opening the CDROM drive on your computer or flipping the text on your screen backwards or upside down.
Also Known As: joke, hoax