Dictionary attack e-mail identification

Details Dictionary attack e-mail identification Dictionary attack e-mail identification

2008-07-29

2008-07-29

Caldwell, Andrew (Department: 2142)

Electrical computers and digital processing systems: multicomput

Computer conferencing

Demand based messaging

Reexamination Certificate

active

07406503

ABSTRACT:
User IDs in addresses to which an e-mail is addressed are logically ordered into a 2D matrix of rows each having one user ID. For each column in the 2D matrix, a column count is found by counting the highest number of matching characters in the column. A column quotient is calculated for each column by dividing the column count by the total number of rows in the 2D matrix. A weighted column quotient is calculated for each column by multiplying the column quotient by a weight that is based on the left-to-right order of the column in the 2D matrix. A numerical assessment is made of the similarity of the user IDs in the addresses to which the e-mail is addressed by adding up the weighted column quotients for the columns in the 2D matrix.

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