jm + packets + spam   1

Spammergate: The Fall of an Empire
Featuring this interesting reactive-block evasion tactic:
In that screenshot, a RCM co-conspirator describes a technique in which the spammer seeks to open as many connections as possible between themselves and a Gmail server. This is done by purposefully configuring your own machine to send response packets extremely slowly, and in a fragmented manner, while constantly requesting more connections.
Then, when the Gmail server is almost ready to give up and drop all connections, the spammer suddenly sends as many emails as possible through the pile of connection tunnels. The receiving side is then overwhelmed with data and will quickly block the sender, but not before processing a large load of emails.


(via Tony Finch)
via:fanf  spam  antispam  gmail  blocklists  packets  tcp  networking 
march 2017 by jm

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