摘要:
Embodiments in accordance with the invention install a primary security browser extension first in the browser event notification order list and a secondary security browser extension last in the event notification order list. On receipt of a user data event including user confidential data at the primary security browser extension, the user confidential data is obfuscated by the primary security browser extension and the user data event including the obfuscated data is released to a next browser extension in the browser event notification order list. Upon receipt of the user data event at the secondary security browser extension, the obfuscated data is restored with the original user confidential data and the user data event is released for further processing.
摘要:
A decision tree for classifying computer files is constructed. Computational complexities of a set of candidate attributes are determined. A set of attribute vectors are created for a set of training files with known classification. A node is created to represent the set. A weighted impurity reduction score is calculated for each candidate attribute based on the computational complexity of the attribute. If a stopping criterion is satisfied then the node is set as a leaf node. Otherwise the node is set as a branch node and the attribute with the highest weighted impurity reduction score is selected as the splitting attribute for the branch node. The set of attribute vectors are split into subsets based on their attribute values of the splitting attribute. The above process is repeated for each subset. The tree is then pruned based on the computational complexities of the splitting attributes.
摘要:
A decision tree for classifying computer files is constructed. Computational complexities of a set of candidate attributes are determined. A set of attribute vectors are created for a set of training files with known classification. A node is created to represent the set. A weighted impurity reduction score is calculated for each candidate attribute based on the computational complexity of the attribute. If a stopping criterion is satisfied then the node is set as a leaf node. Otherwise the node is set as a branch node and the attribute with the highest weighted impurity reduction score is selected as the splitting attribute for the branch node. The set of attribute vectors are split into subsets based on their attribute values of the splitting attribute. The above process is repeated for each subset. The tree is then pruned based on the computational complexities of the splitting attributes.
摘要:
Application usage is profiled based on application streaming. Code pages of multiple applications are streamed from a server to multiple client computers (endpoints) for execution. The streaming of the code pages is monitored, and usage data is collected such as which pages are streamed to which endpoints, under what circumstances and when. By referencing the streamed code pages and the underlying source code, the code pages are mapped (at least approximately) to corresponding application features. The collected usage data usage and the relevant mapping are analyzed, to create application usage profile data for streamed applications. The application usage profile data can include such information as how often, when, where and by whom application components are being executed, as well as which components cause errors, are most popular, confuse users, etc.
摘要:
A decision tree for classifying computer files is constructed. A set of training files known to be legitimate or malicious are executed and their runtime behaviors are monitored. When a behavior event is detected for one of the training file at a point in time, a feature vector is generated for that training file. Behavior sequencing and timing information for the training file at that point in time is identified and encoded in the feature vector. Feature vectors for each of the training files at various points in time are fed into a decision tree induction algorithm to construct a decision tree that takes into account of the sequencing and timing information.
摘要:
Methods, systems, and products for detecting phishing attempts through fingerprinting are provided. In an embodiment, there is a computer program product that comprises a computer-readable medium and computer program instructions encoded on the medium for deterring fraud perpetrated through an incoming electronic message containing an address for responding to the incoming electronic message. The instructions are for extracting the address from the incoming electronic message and generating a fingerprint based on the extracted address. It is then determined whether the generated fingerprint matches a plurality of stored legitimate fingerprints. When there is a lack of a match, an action is taken to prevent use of the address.
摘要:
By placing computer specific remotely originated application data under control of a central identity management system, users can seamlessly run remotely originated applications after logging on to different computers in the enterprise. Cached application content received from a streaming server or network file system, as well as additional application specific data (e.g., files created by the application, configuration changes made by the application on the local computer, etc.), can be configured as central identity management system profile object, using a central identity management system such as Active Directory. This data is thus automatically treated as part of the user settings/profile, and made available on any computer within the enterprise. This results in an optimal application experience for users, regardless of which managed computer they logon to within the enterprise.
摘要:
A method and apparatus for identifying web attacks is described. In one embodiment, a method of securing a computer comprises generating origin information for a portion of a web page and identifying a modification in the origin information. The identified modification is used to determine an indicia of suspicious behavior at a computer.
摘要:
A streaming server which streams an application to a client computer (“endpoint”), as well as the client on which the streamed application runs, makes predictions as to what sections of the application the client is likely to execute in the future. Upon receipt of an indication (e.g., from a system administrator) of a planned service outage of the server or the network, the server transmits the application content that is predicted to be needed by the client during the outage in order to continue executing the application without interruption. The client receives and caches the content. Provided that the prediction is sufficiently accurate, the client can continue to seamlessly execute the application during the service outage.
摘要:
A callback component embedded on a web site determines a current location of the web site. The current location is compared to a known legitimate location of the web site to determine if the web site has been copied to a different host location. Responsive to determining that the web site has been copied to a different location, the callback component alerts a central authority that the web site may be a fraudulent web site set up to launch phishing attacks. If the central authority determines that the web site is fraudulent, the central authority alerts appropriate entities to take down the fraudulent web site. The callback component generates a visual component viewable on the web site to deter phishing attackers from removing the callback component when the web site is copied.