[Mailman-Users] Distributed mass subscribe attack?

David Gibbs david at midrange.com
Tue Aug 8 13:22:01 EDT 2017


Anyone else noticing a distributed mass subscribe attack going on their lists?

I've noticed a massive number of attempts a small subset of email addresses, with modifiers (address+modifier at example.com), going on.

It appears the address is valid ... so it appears to be some kind of hit job to flood someone's inbox.

Luckily the address's are trivial to block using 'ban_list'.

The hosts they are using appear to be from all over the place, although they do seem to be favoring hosts serviced by virtua.com.br.


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