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:
Jan. 19, 2016
Filed:
Dec. 15, 2009
Simon R. Wiseman, Malvern, GB;
Simon R. Wiseman, Malvern, GB;
QINETIQ LIMITED, , GB;
Abstract
Protection of a computer system () against attacks using malformed files is applied to an application () configured to process files of a predefined Headerless format indicated by a Characteristic pattern of bytes. An incoming file's Characteristic pattern is checked by comparing its leading bytes with Characteristic patterns. If its leading bytes have such a pattern, the file () is subjected to a full content check; the file is discarded () if it lacks such a pattern or has contents considered damaging. A file is checked regarding suitability for further processing by comparing its leading bytes with the Characteristic pattern of the predefined Headerless format. A full content check of the file may also be carried out. The application () is permitted to process files having the Characteristic pattern of the predefined Headerless format and appropriate file contents. The method can deal with ZIP files (b) etc. starting with redundant data beven if polymorphic, provided that the file is not potentially damaging.