Hypervisor security using SMM
US8843742B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 2008 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | May 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/64
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems, apparatuses and program products are disclosed for protecting computers and similar equipment from undesirable occurrences, especially attacks by malware. Invariant information, such as pure code and some data tables may be enrolled for later revalidation by code operating outside the normal context. For example, a periodic interrupt may invoked a system management mode interrupt service routine to discover whether code regions accessible to Protected Mode programs have become corrupted or otherwise changed, such as by tampering from untrusted or untrustworthy programs that have easy access only to protected mode operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.