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Method and system for phishing detection

  • US 20070283000A1
  • Filed: 05/30/2006
  • Published: 12/06/2007
  • Est. Priority Date: 05/30/2006
  • Status: Active Grant
First Claim
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1. A method for detection of phishing attempts in received electronic mail messages in a networked environment including a plurality of personal computers, and electronic mail server, the method comprising:

  • receiving an incoming electronic mail message, wherein said electronic mail message includes an address;

    retrieving the source code of said incoming message;

    retrieving text as displayed to the recipient of said electronic message;

    retrieving a list of all specified addresses from said retrieved source code;

    applying visual character normalization to each said specified address to develop all possible address combinations and to form a normalized address list;

    removing said specified addresses from said normalized address list to create a revised address list;

    performing comparison tests to determine if each address in said revised address list is a valid address;

    returning a message to said recipient that said electronic message may be a forgery if a tested address is found to be not valid;

    performing said comparison tests on another address in said revised address list if said tested address is found to be valid; and

    informing said recipient that said electronic message is valid and accepted if said tested address is found to be valid.

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