Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2008-05-13
2008-05-13
Peeso, Thomas R. (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S164000, C713S166000, C713S167000, C713S168000, C713S194000
Reexamination Certificate
active
09901442
ABSTRACT:
The invention prevents robots from browsing a Web site beyond a welcome page. When an initial request from an undefined originator is received, the Web site responds to it with a welcome page including a challenge. Then, on receiving a further request from the undefined originator, the Web site can check whether the challenge is fulfilled or not. If fulfilled, the undefined originator is assumed to be a human being and authorized to go on. If the challenge is not fulfilled, the undefined originator is assumed to be a robot, in which case site access is further denied.The invention prevents Web site contents from being investigated by robots while not requiring users to have to log on.
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Lamberton Marc
Levy-Abegnoli Eric
Thubert Pascal
Bracken, Esq. Joseph E.
Carey Rodriguez Greenberg & Paul LLP
Greenberg, Esq. Steven M.
International Business Machines - Corporation
Peeso Thomas R.
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