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Ophcrack is a free open-source (GPL licensed) program that cracks Windows log-in passwords by using LM hashes through rainbow tables.The program includes the ability to import the hashes from a variety of formats, including dumping directly from the SAM files of Windows, and can be run via the command line or using the program’s GUI (Graphical user interface).
File verification is the process of using an algorithm for verifying the integrity of a computer file, usually by checksum.This can be done by comparing two files bit-by-bit, but requires two copies of the same file, and may miss systematic corruptions which might occur to both files.
This can be particularly useful in tracing the history of a copy of a video. Detecting watermarks in a video can indicate the source of an unauthorized copy. While video fingerprinting systems must search a potentially large database of reference fingerprints, a watermark detection system only has to do the computation to detect the watermark.
Microsoft originally used PhotoDNA on its own services including Bing and OneDrive. [31] As of 2022, PhotoDNA was widely used by online service providers for their content moderation efforts [10] [32] [33] including Google's Gmail, Twitter, [34] Facebook, [35] Adobe Systems, [36] Reddit, [37] and Discord.
The company later credited owners of the affected games with a free download, and there has been no further downtime. [72] In 2011, comedian Louis C.K. released his concert film Live at the Beacon Theater as an inexpensive (US$5), DRM-free download. The only attempt to deter unlicensed copies was a letter emphasizing the lack of corporate ...
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The MD5 message-digest algorithm is a widely used hash function producing a 128-bit hash value. MD5 was designed by Ronald Rivest in 1991 to replace an earlier hash function MD4, [3] and was specified in 1992 as RFC 1321. MD5 can be used as a checksum to verify data integrity against unintentional corruption.
Video game piracy is the unauthorized copying and distributing of video game software, and is a form of copyright infringement. It is often cited as a major problem that video game publishers face when distributing their products, due to the ease of being able to distribute games for free, via torrenting or websites offering direct download ...