Instant Messaging software (IM) as a business tool can be rather powerful, but any instrument can be abused, especially if unmanaged. The better way to manage any communication is to guarantee that communication is directed through a central point, like a gateway. Vendors have worked this and have built clients that are gateway aware and that function as both internal and external IM solutions. Recently there have been more Instant Messaging vulnerabilities. Antivirus vendors are realising that worms, viruses and other malware can spread through IM and are building new defences that reduce the risk. Links transferred by the use of IM are an additional risk, the use of application firewalls on the corporate LAN can reduce the risk, but a bigger problem is presented when users take their corporate machines offsite. On unprotected networks application layer firewalls are absent at the perimeter meaning that communication is less secure, for this reason the endpoint requires a host based ...
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