Like day follows night, a bogus "cumulative update" with a malicious attachment has followed Microsoft's patch day.
In what has become a monthly staple, virus writers are taking advantage of the heightened public interest around Microsoft's patching cycle to trick users into executing a malicious attachment.
The latest social engineering trick arrives via e-mail with an attachment that purports to be a "cumulative patch" for May 2005.
Details can be found
here.