A system and method that marks whenever a sector on a hard drive is altered. A protected archive bit is maintained for each sector on the hard drive in a secured fashion. Authenticated requests are able to reset the protected archive bit. When a file is changed, the hard drive marks the sectors of the...http://www.google.de/patents/US7401361?utm_source=gb-gplus-sharePatent US7401361 - System and method for reducing virus scan time
