I’ve read comments, articles, and emails giving advice about a recent spoof email going around pretending to be from the IRS, a new version of an old trick.
Different opinions have been offered as to what antivirus programs are good in detecting, blocking and eradicating the rogue security software that gets installed in your computer if you do get the infection contained in these IRS emails.
The problem with all those antivirus programs is that detection still relays mainly on a signature/definitions file, and any other method of detection is eluded by these rogue security programs because they’re too similar to a legit program.
To get the full explanation on the above, read my article, written 2 years ago, on a security model that can withstand any such attacks. It was successfully stopping all known attacks then, and it’s still doing it now. And if you want to raise the security bar even more, add virtualization to it.
Hope this helps.