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Daniel_Newby
on Nov 10, 2012
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Why David Petraeus’s Gmail account is a national s...
The blacklist can be compromised, which is a larger vulnerability than having no blacklist.
samt
on Nov 11, 2012
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Save only the hash, or use a data structure like a bloom filter.
toomuchtodo
on Nov 10, 2012
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I blacklist is modified, notify me via SMS (the same way Google/Facebook can handle you not able to get into your account).
TeMPOraL
on Nov 11, 2012
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parent
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It's not about modifying; just reading the addresses you don't want to send mails to is informing enough.
toomuchtodo
on Nov 11, 2012
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root
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Don't display them to the user without two-factor authentication then. Everything can be compromised at some point.
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