Abstract: A method for enforcing a distribution policy associated with an electronic document comprising the steps of: sending the document to an output device; determining said distribution policy associated with said document; instructing a marking module to embed a marking indicating at least the existence of said distribution policy on an output form of said electronic document produced by said output device, said marking being readable to enforce said associated marking policy.

Abstract: A method and apparatus for secure distribution of information over a network, comprising: encrypting payload information using a first encryption key in a first data processor; sending the payload information encrypted using the first encryption key to a second data processor; encrypting the payload information encrypted using the first encryption key using a second encryption key in the second data processor; and sending the payload information encrypted using the first encryption key and the second encryption key to a third data processor, and generating a decryption key based on the first encryption key and on the second encryption key, such that the decryption key is operable to compute the payload information by decrypting the payload information encrypted using the first encryption key and the second encryption key.

Abstract: 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.

Abstract: 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 ambiguit

Abstract: A method and a system for information management and control is presented, based on modular and abstract description of the information. Identifiers are used to identify features of interest in the information and information use policies are assigned directly or indirectly on the basis of the identifiers, allowing for flexible and efficient policy management and enforcement, in that a policy can be defined with a direct relationship to the actual information content of digital data items. The information content can be of various kinds: e.g., textual documents, numerical spreadsheets, audio and video files, pictures and images, drawings etc. The system can provide protection against information policy breaches such as information misuse, unauthorized distribution and leakage, and for information tracking.

Abstract: A method for enforcing a distribution policy associated with an electronic document comprising the steps of: sending the document to an output device; determining said distribution policy associated with said document; instructing a marking module to embed a marking indicating at least the existence of said distribution policy on an output form of said electronic document produced by said output device, said marking being readable to enforce said associated marking policy.

Abstract: A method for computer workstation based information protection is presented, the method comprises: a) monitoring user's actions on the computer workstation, b) analysis of the actions in respect to a pre-defined policy to determine whether the actions prejudice information to which the policy applies, and c) executing the policy in accordance with the results of the analysis to prevent or modify or restrict or monitor or log the actions.

Abstract: A method for the detection and estimation of periodicities in noisy signals. First the signal is sampled and preprocessed in a discrete succession of equal periods. Then, short term characteristics vectors are generated for each period. The short term characteristics vectors are then grouped into sets, followed by the obtainment of at least one representative vector for each set. Periodic structures are estimated using the representative vectors. In a preferred embodiment, the short term characteristics are the the short tern spectra of the signal. Practically, an autocorrelation matrix is constructed to assess autocorrelation along a diagonal.

Abstract: A method for determining compliance with a data distribution or usage policy applied with respect to a digital medium is presented. The method comprising: assigning numerical values to breaches of the policy; assigning a quota of breaches of the policy to at least one user subjected to the policy, the quota being expressed in terms of the numerical value; monitoring information distribution or usage covered by the policy in order to detect breaches of the policy by users; upon detection of an action breaching the policy by a given one of the users: determining whether a numerical value has been assigned to the type of the breach; comparing the numerical value assigned to the type of breach with a respective quota assigned to the given user, and allowing the action to be executed only if the comparing indicates that the respective quota assigned to the given user is sufficient to cover the breach.

Abstract: A method for distributed management of phrase-based security policy, the security policy applied with respect to a digital medium, the method comprising: storing at least one phrase together with accompanying security policy; assigning an owner to at least one of the stored phrases; scanning and analyzing the digital medium in order to locate and identify the at least one stored phrase; upon locating the at least one phrase within a digital item in the digital medium: applying the security policy with respect to the digital item, and notifying the owner.

Abstract: A method and apparatus for providing multi-domain control over a digital data item via a first domain security policy assigned to the digital data item at a first domain, the data item being transferred from the first domain to a second domain, the second domain being autonomous from the first domain in respect of security policies. The method comprises assigning the security policy to the digital item within the first domain; transferring the digital items to the second domain together with data defining the first domain security policy; analyzing the first domain security policy within the second domain; and distributing and/or allowing usage of the digital items within the second domain in accordance with analyzed first domain security policy, and/or reporting breaches or attempted breaches of the policy.

Abstract: According to a first aspect of the present invention, a method for enforcing a distribution policy with respect to information transmitted from a sending fax machine to a recipient fax machine as fax traffic is presented. The method comprising defining an information distribution policy with respect to the fax traffic, then monitoring the fax traffic in accordance with the distribution policy, where the monitoring comprising: (i) de-modulating the fax traffic being monitored into a digital stream; (ii) reconstructing from the digital stream a graphic image representing at least part of the information within the fax traffic; and (iii) analyzing information within the reconstructed image, and then applying the distribution policy with respect to the analyzed fax traffic.

Abstract: A method for detecting an information item within an information sequence obtained from a digital medium, the information item comprising any one of a specified set of prestored information items, comprises: transforming each of the set of prestored information items into a respective representation, in accordance with a predetermined transformation format; transforming the information sequence obtained from the digital medium, in accordance with the transformation format; and determining the presence of one or more of the prestored information items within the transformed information sequence, utilizing the respective representation.

Abstract: A method for automatically embedding information in a digital text, said method comprising: identifying a plurality of positions, in said digital text, that are suitable for introducing modifications into said digital text; identifying modifications suitable for introduction into at least some of said suitable positions in said digital text; selecting at least some of said identified modifications for introduction into said digital text, said selection of said modifications being operable to represent said information; and performing said selected modifications on said digital text, thereby to embed said information.

Abstract: A method for secure distribution of digital content (108), the method including the steps of dividing a unit of digital content into at least first and second portions (200), 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 (106) version of the digital content.

Abstract: A system and a method for providing uniquely marked copies of data content. The method contain two basic phases: a preprocessing phase, which produces a library of marked segments, and a message embedding phase, which utilizes the stored marked segments in order to efficiently produce a personalized version of the content, by selecting various marked segments and inserting the selected marked segments into the data content.

Abstract: A method of distributing digital content or service over a communication network is provided. The method is effected by: (a) analyzing a request for distribution of the digital content or service; (b) generating a policy associated with the digital content or service; and (c) assembling a distribution syndicate of distribution entities, the distribution entities being selected according to the policy associated with distribution of the digital content or service, the distribution syndicate being for distributing the digital content or service over the communication network.

Abstract: A method and apparatus for secure distribution of information over a network, comprising: encrypting payload information using a first encryption key in a first data processor; sending the payload information encrypted using the first encryption key to a second data processor; encrypting the payload information encrypted using the first encryption key using a second encryption key in the second data processor; and sending the payload information encrypted using the first encryption key and the second encryption key to a third data processor, and generating a decryption key based on the first encryption key and on the second encryption key, such that the decryption key is operable to compute the payload information by decrypting the payload information encrypted using the first encryption key and the second encryption key.

Abstract: A method for robust embedding of information into video content, said method comprising of breaking said video content into a series of at least one unit; selecting at least one of said units, selecting at least one parameter for at least one of said units and performing at least one geometric transformation on said selected units according to said parameters selected for said unit, thereby to embed said information in said video content.

Abstract: A method for dynamic embedding of objects into context selectable locations in digital media items to form versions of said digital media items, said method comprising the steps of: finding context suitable locations in said visual media; dynamically selecting a subset of said objects for at least one location; and embedding one object of said subset of objects in said at least one location, thereby to form a version of said digital media item.