Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

(a) Filenames will be encoded in a 1-way hash (MD5). 

(b) Filenames will be sent in an obfuscated form, with all lowercase ASCII letters ([a-z]) replaced with 

“a,” all uppercase ASCII letters ([A-Z]) replaced with “A,” any multi-byte UTF-8 characters 
replaced with “x” (to provide privacy for other character sets), all ASCII digits ([0-9]) replaced 
with “0,” and all other single byte characters (whitespace, punctuation, etc.) maintained. For 
example, the file Britney1.txt.pif would appear as Aaaaaaa0.aaa.pif.

(c) URL hostnames point to a web server providing content, much as an IP address does. No 

confidential information, such as usernames and passwords, are included. 

(d) URL information following the hostname is obfuscated to ensure that any personal information of 

the user is not revealed.

If you agree to participate in the SenderBase Network: 

Data sent from your Cisco IronPort appliances will be sent to the Cisco IronPort 
SenderBase Network servers using the secure protocol HTTPS. 

All customer data will be handled with care at Cisco. This data will be stored in 
a secure location and access to the data will be limited to employees and 
contractors at Cisco who require access in order to improve the company's email 
security products and services or provide customer support. 

No information identifying email recipients or the customer's company will be 
shared outside of Cisco Systems when reports or statistics are generated based on 
the data. 

300 “.exe” attachments

100 attachments that have a “.doc” 
extension but are actually “.exe”

50 attachments are “.exe” extensions 
within a zip

30 attachments were “.exe” within the 
50-55K range