Why Text Analysis Isn’t Enough

There’s a fascinating blog post over on Network World about spammers getting around OCR analysis with animated .gif images. In this case, the technique is quite sophisticated. Spammers are layering animated images on top of each other. Each image looks like nonsense alone, but merged together they read like normal text.

Given how technically advanced spammers (and other purveyors of unwanted content) have become, it amazes me that most people are still relying on pornography filters based solely on text and URL analysis. Multimedia is in. And to assume that you can block pornography without a tool to analyze images is naive at best.

Like this:

Be the first to like this post.

Explore posts in the same categories: Internet, spam, Tech, Web Filter

This entry was posted on October 22, 2006 at 10:31 am and is filed under Internet, spam, Tech, Web Filter. You can subscribe via RSS 2.0 feed to this post's comments. You can comment below, or link to this permanent URL from your own site.