Patent attributes
A computer-implemented method of mitigating the effect of a security threat present in a computer file of a known type. The method involves modifying the file to mitigate unsafe behaviour when the file is interpreted in accordance with the known type and/or in accordance with one or more different file types, and subsequently checking the modified file to ensure that it exhibits a known safe behaviour when interpreted according to the one or more different file types. The modified file may be checked to ensure it exhibits known safe behaviour when interpreted according to the one or more different file types. There may be two or more independent checks each according to one of the one or more different file types. The independent checks may be done in parallel. The step of modifying may include adding a damper to the file.
