File sequence

Abstract: The invention relates to a ransomware prevention method and system. The method comprises the steps of creating at least one bait file with the type conforming to a ransomware encryption type and inserting the bait file into an original file sequence of a to-be-protected disk; judging whether the bait file is changed or not; and prohibiting the to-be-protected disk to be subjected to a preset operation when the bait file is changed. According to the method and the system, the bait file with the type conforming to the ransomware encryption type is created by utilizing a characteristic that ransomware traverses disk files necessarily to search for a file type suitable for encryption, and the bait file is put in the original file sequence of the to-be-protected disk; the effects of prewarning the ransomware and protecting other disk files are achieved by monitoring the bait file; the prewarning accuracy is high; a targeted scheme is designed based on an inevitable common behavior of the ransomware, so that known and unknown ransomware can be detected; and the disk space occupied by the created bait file nearly can be ignored.

Abstract: The invention provides a file data backup method based on Delta increment, which uses the Delta file increment technology to reduce memory space of data, enables a disc to leave more backup space andrealizes that backup data can be kept for longer time and a lot of bandwidth required in off-line storage can be saved. The system structure comprises a Delta Sequence module, a Delta reading module,a Delta merging module, a Delta comparing module and a Delta Processor module; the functions of the modules and the file backup steps are as follows: the Delta Sequence module is used for comparing whether the two files are same or not by comparing files, bytes and Hash, so that the module is the sequencing of a file sequence module, a byte sequence module and a Hash sequence module, and has the function of comparing and filtering, thus rapidly comparing whether the two sequences are same or not by transporting among sequences; the module has the advantages of increasing disc backup use ratio,saving backup space and dealing the challenge faced by data sharp increase when being applied into a data backup system.

Abstract: A method for accelerating a tape backup system restore process receives a list of files that are to be restored and searches a tape catalogue to find tape volume and file sequence numbers for each file in the list of files, where the catalogue is an alphabetical listing of the contents of one or more backup tape volumes. The process appends the tape volume and file sequence numbers for each of the files to the list of files and then sorts the list of files according to tape volume and file sequence number. Accordingly, a list is obtained including the files that are to be restored, ordered according to the location of the files on the backup tape volumes. The restore process is accelerated by restoring files sequentially from this list and skipping over any intermediate files that are not on the list.

Abstract: Systems and methods for sequencing electronic files include generating a first file sequence and one or more alternative file sequences. An alternative file sequence may be generated based in part on a characteristic of a file in the first sequence. The first and alternative sequences may be used in an electronic slideshow that allows a user to switch between file sequences. In some implementations, which alternative file sequences are generated may be determined based in part on a prediction of characteristics that may be of interest to a user.