System and method for efficient fingerprinting in cloud multitenant data loss prevention
US11190589B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2020 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Oct 27, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data loss prevention mechanism for a cloud-based security analytics system is provided that utilizes a compact repository that improves the ratio of false positives over traditional methods, maintains a small data size, permits distribution of compact repository files to a large number of analyzing nodes, and provides metadata for matched events. A compressed bitmap of information found in a compact repository is used, thereby improving the utilization of storage space for a repository containing information associated with a significant number of data fingerprints. Compression further allows for a larger entry size in the compact repository, thereby providing a lower false positive rate. A mechanism for distributing updates to compact repositories residing on cloud servers is provided by updating a central server and propagating the updates to remote servers. Identification of secured data associated with unstructured data fingerprints is also handled using distributed reference to a centralized fingerprint repository.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.