May 26, 2018
Plugin for SpamAssassin which scans image attachments for spam
FuzzyOcr is a plugin for SpamAssassin which scans image attachments for spam keywords, using an Optical Character Recognition program.
This plugin can be used to detect spam that puts all the real spam content in an attached image. The mail itself only random text and random html, without any URLs or identifiable information.
It is also able to do approximate matches on words, so errors in recognition or attempts to obfuscate the text inside the image will not cause the detection to fail.