Neil Madden

neilmadden.blog

Thoughts on application security, applied crypto, philosophy and logic

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Software Engineering 6 Security & Privacy 3 Programming Languages 3 Databases & Data 1 AI & Machine Learning 1

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Moving Away from UUIDs (2018)

2022281 points230 comments Databases & Data details

If you need an unguessable random string (for a session cookie or access token, for example), it can be tempting to reach for a random UUID, which looks like this: 88cf3e49-e28e-4c0e-b95f-6a68a785a…