Instant messaging (IM) software, such as Windows Messenger, Yahoo! Messenger and Google Talk, have moved beyond the world of high school chatter and into the world of corporate communications. Yet, in many cases, security policies and processes haven't caught up to this technology. It's now time to consider how instant messaging is, and should be, used in your organisation, and how to protect against IM threats. Instant messaging policies The first step is to clearly state your organisation's policy on instant messaging. Can users install and use IM software on systems owned by the organisation? If you have a strict "no outside software" policy, you may think you're covered, but keep in mind that Windows XP SP2 ships with Windows Messenger installed, creating a policy loophole. Here's a set of questions you should consider when defining your organisation's IM policy: Is IM use permissible on your network? May users run IM software on systems owned by y...
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