Trend Micro Inc.

Entrust Technologies Limited

Trend Micrio Incorporated

Blake Stanton Sutherland

Rares Stefan

William Gerald McGee

William G Mcgee

Robert Everett Parkhill

A method and apparatus for detecting data modification in a layered operating system is disclosed. Outbound content indicators at different layers are compared to detect potential outbound data modifications. Likewise, inbound content indicators at different layers are compared to detect potential inbound data modifications. Content indicators include checksum, cryptographic hash, signature, and fingerprint indicators. Embodiments of the present invention enable detection of data modifications across an operating system's kernel and user mode spaces, prevention of modified outbound data from reaching a network, prevention of modified input data from reaching a user application, and detection of malware and faults within an operating system.

Method and system for detecting data modification within computing device

An intrusion prevention/detection system filter (IPS filter) performance evaluation is provided. The performance evaluation is performed at both the security center and at the customer sites to derive a base confidence score and local confidence scores. Existence of new vulnerability is disclosed and its attributes are used in the generation of new IPS filter or updates. The generated IPS filter is first tested to determine its base confidence score from test confidence attributes prior to deploying it to a customer site. A deep security manager and deep security agent, at the customer site, collect local confidence attributes that are used for determining the local confidence score. The local confidence score and the base confidence score are aggregated to form a global confidence score. The local and global confidence scores are then compared to deployment thresholds to determine whether the IPS filter should be deployed in prevention or detection mode or sent back to the security center for improvement.

Methods and system for determining performance of filters in a computer intrusion prevention detection system

Value based licensing/billing methods and system for security software is provided, which use an effective vulnerability protection measure provided by a new or updated IPS filter deployed on host computer to determine the licensing/billing fee of the new or updated IPS filter over a billing period. The effective vulnerability protection measure is determined based on vulnerability and host attributes, and, in the embodiment of the invention, is based on a vulnerability time gap or time protected of the host computer.

Methods and system for determining licensing/billing fees for computer security software

A method and system for managing public key certificates is provided. A user purchases a block of unallocated time. When the user requests a certificate, the user specifies a life span for the certificate. A certificate is generated, and the life span of the certificate is deducted from the block of unallocated time. If the user revokes a certificate, the remaining lifetime of the revoked certificate is added back to the block of unallocated time. This allows certificates to be revoked without loss of purchased time, and gives the user more flexibility at requesting and revoking certificates.

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Stittsville, Canada

Blake Stanton Sutherland