Data compression software - It repackages (lossless compression), or removes (lossy compression) some of the file's data to reduce its size, Disk defragmentation - It rearranges individual file blocks for each file so that they are stored in contiguous (adjoining) blocks on the disk, Backup software - Backup copies of files are made at regular intervals and stored on a separate device in a different location to the live working environment - possibly the cloud, File repair software - It scans the damaged file, extracts as much data from it as possible and stores it in a new usable file, Anti-malware software - Some types of anti-malware software use a database of malware signatures (patterns associated with a known piece of malware). If the anti-malware detects a file that has a pattern that match a known signature, it deletes or quarantines it. Some use heuristic analysis to detect suspicious behaviour, such as a program that tries to remain resident in memory after it has finished executing.,

Utility Software (How it works)

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