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Re:First American Financial Corp. Leaked Hundreds of Million... by ciupicri on Friday May 24, 2019 @11:25PM (#20006929)
From https://littlemaninmyhead.wordpress.com/2015/11/22/cautionar...

> Do not assume that UUIDs are hard to guess; they should not be used as security capabilities (identifiers whose mere possession grants access), for example.

HN discussion: https://news.ycombinator.com/item?id=10631806

Re:First American Financial Corp. Leaked Hundreds of Million... by GordonS on Saturday May 25, 2019 @05:47AM (#20008035)
Sure, security is about taking a layered approach - I don't think anyone would seriously advocate using knowledge of a UUID as enough authorisation on it's own. Well, I hope not :)