A system for detecting random information in an electronic communication, and recognizing the electronic information as being undesired information, e.g. Spam, when such random information is detected. The random information can be random characters, random words, or the like. The random words can be detected by comparing the words with a dictionary, and selecting words as being random when they do not match the dictionary. A matching criteria less than 100% may be established to accommodate words which are not in the dictionary and typographical errors.