A hash is kinda trash. Or, more precisely, not only will hashing data not anonymize it, but regulators, including the Federal Trade Commission, consider hashed identifiers to be personal information.
Professional social networking site LinkedIn is in crisis mode after reporting the passwords of six million users have been stolen. The passwords were posted in their encrypted form on a Russian forum ...
A random number added to a password to make it more difficult to crack. It is common practice to take passwords and run them through a hashing algorithm and store the results in the login database.
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