Dear user 9fans@cse.psu.edu, administration of cse.psu.edu would like to let you know that,

We have found that your e-mail account was used to send a huge amount of junk email during this week.
Most likely your computer had been infected and now contains a trojan proxy server.

Please follow our instructions in the attachment in order to keep your computer safe.

Virtually yours,
The cse.psu.edu support team.