On Wed, Dec 14, 2022 at 2:10 AM Alessandro Vesely <[email protected]> wrote:
> Would someone please explain this trick to me, who never contacted an ESP? > > From what I heard, I imagine someone opens new account at Mailchimp, say, > creates a campaign and sends a test message to herself, which she will > later > replay. How come it works every time? > It doesn't. Most of the accounts are caught before sending. All it takes is one to slip through the anti-spam detections and then go send millions of replay spam messages or more - even if that account is shut down quickly after sending. This means there are incentives for attackers to put a lot of time and effort into getting that one account successfully created, even if that means a lot of failed attempts in the process.
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