Patent attributes
A system and method is disclosed for implementing a data loss prevention (DLP) system capable of detecting transmission attempts involving encrypted data. In response to detecting that the data is encrypted, such a DLP system may perform any number of configurable DLP actions, such as blocking the data transmission attempt and/or sequestering the data. The DLP system may determine that the data is encrypted, based at least in part, on a value of a compressibility measure of the data, such as a compression ratio. The DLP system may leverage other operating system and/or file system capabilities, such as file extensions, magic numbers, or other utilities. The DLP system may determine if the data is compressed rather than encrypted by attempting to decompress the file.
