×

System, method, and computer program product for identifying objects as at least potentially unwanted based on strings of symbols

  • US 8,650,200 B2
  • Filed: 06/21/2011
  • Issued: 02/11/2014
  • Est. Priority Date: 03/19/2007
  • Status: Active Grant
First Claim
Patent Images

1. A method, comprising:

  • receiving an electronic mail message at a client computing device that includes a processor and a memory;

    parsing an object included in the electronic mail message to allow strings of symbols across lines of the object to be identified;

    determining a ratio of symbols in a portion of the object to a total number of characters in the portion of the object;

    comparing the ratio to a predetermined threshold to determine whether the object should be decoded;

    decoding characters of the object based on a font size and associations of formation characters to determine decoded characters that extend across sequential lines of the object, wherein for a particular font and the font size, the strings of symbols are identified as formation characters based on corresponding width and line values associated with consecutive spaces in sequential lines;

    comparing the decoded characters to known unwanted content; and

    calculating a score associated with the object based on a predefined weight for decoded characters that match the known unwanted content.

View all claims
  • 9 Assignments
Timeline View
Assignment View
    ×
    ×