Rule: 

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Sid: 
5693

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Summary: 
This event is generated when network activity relating to Skype has been detected.

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Impact: 
Possible policy violation. The use of Skype may not be appropriate in certain network environments.

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Detailed Information:
This event indicates that a sucessful start of the peer to peer client Skype was detected on the protected network.

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Affected Systems:
All systems using the Skype client.

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Attack Scenarios: 

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Ease of Attack: 
Simple.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action: 
Disallow the use of Skype clients on the protected network and enforce or implement an organization wide policy on the use of Skype clients.

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Contributors:
Sourcefire Vulnerability Research Team
Kevin Shivers <kevin.shivers@sourcefire.com>
Alex Kirk <alex.kirk@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:

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