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Editorial Team
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Asked: 2026-05-13T14:27:31+00:00

What kinds of data should never be kept in a session?

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What kinds of data should never be kept in a session?

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  1. Editorial Team

    I really wish it was clearer what kind of session you mean. Depending on the answer, I can come up with a couple:

    • Passwords of any sort
    • Large amounts of data, especially 4 GB+ on a 32-bit OS (guaranteed out of memory if it has to be loaded into RAM)
    • Executable code
    • Raw SQL
    • Swear words
    • Things likely to get government agencies angry (“Free Tibet” in China, threats to the president in the US)
    • Your bank account PIN or credit card number
    • A rabid badger. Actually, ANY kind of badger.
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