The article is excellent but I think you forgot to mention one important aspect of the security over IM besides encryption and secure archiving and that is the need of user authentication. If a user is encrypted on IM to a malious user at the other end, he/she is more likely to send sensitive inform...
You're exactly right. IM Clients pose a huge security threat, not to mention productivity threat. We switched over to the Brosix.com Instant Messenger as a way to get the needed security.
We've seen a dramatic improvement in reduction of Trojan horses from "friends" who send files to our employe...
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