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Email security crisis... What email security crisis?

Doctor Syntax Silver badge

"by definition it can only be identified as bulk after some number have been sent"

Spam filtering works on more than number of similar emails*, hence my point about the length of time some of this spam has been about.

Even if retrospective detection is applied then as long as the user at the top of the list hasn't collected email - and I only collect from the Hotmail account at wide intervals - then it's perfectly possible to move mail from Inbox to Spam.

*In fact, legitimate bulk email isn't uncommon so number isn't an indicator of spam

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