The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2016
Filed:
Jul. 16, 2013
Hua YE, Nanjing, CN;
Weichao Dai, Nanjing, CN;
Xiaodong Huang, Nanjing, CN;
Trend Micro Inc., Tokyo, JP;
Abstract
Operating system events are monitored and a file change request of a process is detected. If the process is suspicious, then the file to be changed is backed up and then the process is allowed to change the file as requested. If it is later determined that the process is ransomware, the process is blocked and further file backups are halted. The original file is recovered and the encrypted file is discarded. If it is later determined that the process is not malicious, then further file backups are halted. Any backup files are discarded. Ransomware may be detected by comparing a file extension of the process with file extensions of any files requested to be changed, by comparing file extensions of any files requested to be changed, or by an analysis of behavior of the process itself.