Method of and system for detecting an anomalous operation of a computer system
US6963983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2004 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Jan 16, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/552
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A real-time approach for detecting aberrant modes of system behavior induced by abnormal and unauthorized system activities that are indicative of an intrusive, undesired access of the system. This detection methodology is based on behavioral information obtained from a suitably instrumented computer program as it is executing. The theoretical foundation for the present invention is founded on a study of the internal behavior of the software system. As a software system is executing, it expresses a set of its many functionalities as sequential events. Each of these functionalities has a characteristic set of modules that is executed to implement the functionality. These module sets execute with clearly defined and measurable execution profiles, which change as the executed functionalities change. Over time, the normal behavior of the system will be defined by the boundary of the profiles. An attempt to violate the security of the system will result in behavior that is outside the normal activity of the system and thus result in a perturbation of the system in a manner outside the scope of the normal profiles. Such violations are detected by an analysis and comparison of the profile…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.