IMAGE BASED SPAM BLOCKING

摘要

A fingerprint of an image identified within a received message is generated following analysis of the message. A spam detection engine identifies an image within a message and converts the image into a grey scale image. The spam detection engine analyzes the grey scale image and assigns a score. A fingerprint of the grey scale image is generated based on the score. The fingerprint may also be based on other factors such as the message sender's status (e.g. blacklisted or whitelisted) and other scores and reports generated by the spam detection engine. The fingerprint is then used to filter future incoming messages.

主权项

1. A method for message filtering, the method comprising:
receiving a first message from a sender device that is intended for a recipient device, the first message including a first image; identifying that the first message is a spam message based on a spam indication; generating a first fingerprint that characterizes the first image, the first fingerprint based on one or more numerical scores associated with one or more characteristics of the first image; identifying that the first fingerprint also characterizes a second image, the second image included in a second message; and classifying the second message as spam based on the identification that the first fingerprint also characterizes the second image.