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Re:Gravatars: why publishing your email's hash is not a good... by ars on Wednesday December 16, 2009 @01:59AM (#998267)
It would also have to be your email on every service you register with, since they use your email automatically to get a gravatar.
Re:Gravatars: why publishing your email's hash is not a good... by pyre on Wednesday December 16, 2009 @02:17AM (#998283)
Why is that an issue? It defeats this attack if it is '[email protected]', right? Unless we really think that people are going to get into rainbow tables just to extract some email addresses.