Portauthority Technologies, Inc.

Vidius Inc.

Assaf Litai

Lidror Troyansky

Ariel Peled

Sharon Bruckner

Oren Tirosh

Arik Baratz

A method for mitigating false positive type errors while applying an information leak prevention policy to identify important information and to prevent outward leakage. A positive criterion is defined for a positive set, and a negative criterion for a negative set of benign traffic. An ambiguity set contains items showing indications for both positive and negative sets. An ambiguity resolution criterion allows ambiguous items to be placed in/removed from the positive set or negative set. Each information item is searched for matches with the positive set. Each item in the positive set is checked for membership in the ambiguity set. The ambiguity resolution criteria are used for each member of the ambiguity set and to remove items from the positive set accordingly. The leak prevention policy is applied for all items remaining in the positive set thus protecting the important information.

Method and system for information leak prevention

A method for mitigating false positive type errors while applying an information leak prevention policy, the method comprising the computer implemented steps of: defining at least one positive criterion for a positive set, wherein the positive criterion comprises at least one indicator of a possible breach of the information leak prevention policy; defining at least one negative criterion for a negative set, wherein the negative criterion comprises at least one indicator of benign traffic; establishing an ambiguity set in association with an intersection between the positive set and the negative set, such that information items in the intersection enter the ambiguity set; defining at least one ambiguity resolution criterion for resolving the ambiguity; monitoring and analyzing electronic traffic, where each information item in the traffic is searched for matches with the positive set; checking for membership of each item in the positive set in the ambiguity set; resolving ambiguities using one of the ambiguity resolution criterion for each member of the ambiguity set and removing items from the positive set accordingly, and applying information leak prevention policy for all items remaining in the positive set following the removal of items using ones of the ambiguity resolution criteria.

A method for secure distribution of digital content, the method including the steps of dividing a unit of digital content into at least first and second portions, storing the first portion on a first computerized apparatus, digitally watermarking the second portion, and combining the first portion and the digitally watermarked second portion, thereby forming a watermarked version of the digital content.

Secure distribution of digital content

A method for preventing unauthorized access by a requestor to data sent via computer networks, including a) requesting, from a requesting computer, access to data from a first server, at the first server b) determining if the request is a valid request, c) receiving a ticket from a ticket server, if the request is a valid request d) providing the ticket identifying the requestor to a second server the data is stored, e) directing the requesting computer to request access to the data from the second server, at the second server f) receiving the request from the requesting computer, g) verifying the ticket as identifying the requestor, and h) sending the data to the requesting computer in response to the request.

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Kfar-Saba, Israel

Assaf Litai