IM worm

An IM worm is self-replicating malicious code that spreads in instant messaging networks. When an IM worm infects a computer, it locates the address book for the instant messenger client, which is called a buddy list or contact list, and tries to send itself to all the infected person's contacts. Some IM worms rely on social engineering techniques to trick the recipient into accepting a message that contains the malicious code. Choke, CoolNow, and NewPic are three well-known IM worms.

Download this free guide

Download: IT Certifications 101

Inside this exclusive essential guide, our independent experts break down which IT certifications are worth your time and effort, and how to get started obtaining them to further your career— including specific certifications that any cloud or desktop pro should seriously consider.

Start Download

• Corporate E-mail Address:

  You forgot to provide an Email Address.

  This email address doesn’t appear to be valid.

  This email address is already registered. Please login.

  You have exceeded the maximum character limit.

  Please provide a Corporate E-mail Address.

• • I agree to TechTarget’s Terms of Use, Privacy Policy, and the transfer of my information to the United States for processing to provide me with relevant information as described in our Privacy Policy.

  Please check the box if you want to proceed.

• • I agree to my information being processed by TechTarget and its Partners to contact me via phone, email, or other means regarding information relevant to my professional interests. I may unsubscribe at any time.

  Please check the box if you want to proceed.

By submitting my Email address I confirm that I have read and accepted the Terms of Use and Declaration of Consent.