Recent Spam problem

[Rustom Mody]

Of late there has been an explosion of spam
Thought it was only a google-groups (USENET?) issue and would be barred from the mailing list.

But then find its there in the mailing list archives as well
Typical example: https://mail.python.org/pipermail/python-list/2017-July/724085.html

What gives??

On a different note this problem seems to be peculiar to comp.lang.python
via google-groups and is absent on ½ dozen other google groups I see.

Since spammers are unlikely to be choosy about whom they spam:
Tentative conclusion: Something about the USENET-ML gateway is more leaky
out here than elsewhere