Internet users are receiving emails claiming to contain a changelog - but the files attached are really designed to infect computers.
======================== Subject: Re: Your Changelog
as promised chnglog attached (Open with Internet Explorer)
The subject lines and attachment names can also be different from email to email....What's important is that you don't click on the attached .HTM file.
If you do, your browser will try to run the malicious script contained within.
Complete article with details:http://nakedsecurity.sophos.com/2012/02/22/beware-changelog-spammed-out-malware-attack/