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:
Jun. 23, 2026
Filed:
Jun. 29, 2023
International Business Machines Corporation, Armonk, NY (US);
Mark Duane Seaborn, Algonquin, IL (US);
Jacqueline Hegedus Wilson, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A mitigation system protects data in a data store that is not yet encrypted by a successful ransomware attack against encryption. Data is stored in the data store as a set of versions identified in a data tree, and a version can only be updated by writing a new version to the tree. Access controls to prevent modification of the tree are also in place. Following an attack, a restore function is executed to attempt recovery. This function computes an entropy delta that compares an entropy of an encrypted version, with an entropy of versions of the data not yet encrypted. Based on the computed entropy deltas, the restore function identifies a latest clear version of the data, and a restore operation is then is initiated with respect to this version.