what means the deleted.rules

[Zhuxian <zhuxian () huawei com>]

I found one file name deleted.rules. And there are rules created at 2011 also. 

# alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"DELETED WEB-CLIENT Internet Explorer CSS expression 
defined to empty slection attempt"; flow:established, to_client; content:"expression"; nocase; 
content:"document.selection.empty"; within:50; 
pcre:"/expression\s*\x28\s*document\x2eselection\x2eempty\s*\x28\s*\x29/si"; reference:cve,2011-1261; 
reference:url,www.microsoft.com/technet/security/bulletin/MS11-050.mspx; classtype:attempted-admin; sid:19244; rev:2;)

What means for this files?  Can i enable the rules in this file?


Regards,
Kurt.





 

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