We're running an excerpt from the introductory chapter of the book IM Instant Messaging Security by John W. Rittinghouse and James F. Ransome.

What Are the Risks of Using IM? - September 14, 2005
IT Bookshelf: Instant messaging can drastically improve communications amongst your workforce but it also exposes your business to unexpected avenues of attack. Gather some insight on assessing that risk from the new book, IM Instant Messaging Security.

Worth a look if your organization is oblivious to the dangers of IM... (cue scary music )