Spammers are ramping up their use of redirection techniques to try to get around many anti-spam filters, a security firm warned today.
The latest flurry started about 10am Tuesday morning and by 11am represented an estimated 4.3 per cent of the spam on the internet, according to anti-spam firm Mail-Filters.com.
The technique, most commonly found with pharmaceutical spam, sends a user to a web page and the user is then automatically redirected to another web page. This technique is specifically designed to get around databases of destination URLs that many anti-spam technologies rely upon.
“Spammers are constantly looking for solutions to avoid detection by anti-spam technologies so that they can reach more eyeballs.