Abstract: A method and system to verify active content in a server system include receiving a communication (e.g., an e-mail message or an e-commerce listing) that includes active content to be made accessible by the server system. A reference (e.g., a URL) within the active content is identified, the reference pointing to further data that is not included within the communication. This further data is to be retrieved when the active content is rendered. The reference is stored at the server system, and the further data, to which the reference points, is repetitively and periodically retrieved. Subsequent to each retrieval of the further data, a determination is made as to whether the further data is malicious.

Abstract: A method and apparatus for authenticating an electronic message are provided. The method includes investigating data in a header of the electronic message, and generating an authenticity indicator in response to the investigation. The authenticity indicator may provide an indication of the likelihood that the electronic message was sent from a purported sender visible to a recipient of the electronic message. In certain embodiments, the method includes presenting the authenticity indicator to the recipient of the electronic message. Investigating data in the header may include parsing the header to obtain purported sender data in a from field populated at a mail client and to obtain actual originator data, comparing the purported sender data and actual originator data, and generating the authenticity indicator in response to the comparison. The from field may be the “FROM: . . . ” field of an email message provided to identify a sender of the email message.