Saturday, May 17, 2008 2:06 PM
Why SPAM filters need spell checkers
On my corporate mail address I get almost no single piece of SPAM. However, on my private address - running on some Belgian hoster - I get a bunch of it, and to some extent I really enjoy doing the manual SPAM filtering (I got really good at it already). However, this one caught my attention today:
Bacheelor, MasteerMBA, and Doctoraate diplomas available in the field of your choice that's right, you can even become a Doctor and receive all the benefits that comes with it!
The three spelling mistakes are clearly there to mislead SPAM filters. So, I decided to do a little test. Using a plain telnet session like this:
telnet smpt.myundisclosedISP.com 25
MAIL FROM:<same address as the original spam mail>
RCPT TO:<my undisclosed mail address>
Bachelor, MasterMBA, and Doctorate diplomas available in the field of your choice that's right, you can even become a Doctor and receive all the benefits that comes with it!
Guess what? The mail ended up in the webmail SPAM folder. Looks like putting a spell checker in a SPAM filter and bring all the checker's word suggestions in the equation for the SPAM score would be a good idea. On to reading even more generous offers in my inbox now :-)...Del.icio.us
| Digg It
Filed under: Security