Support Anti-Spam Checks Across Channels

[MrHemlock]

There should be an anti-spam filter which checks message history across several channels. This should catch users who send messages in multiple channels which are duplicates and/or sent in quick succession. I'm not sure on the implementation. It seems complicated since history can only be retrieved on a per-channel basis, and we have a lot of channels.

Original message:

So for context, we just had an incident where someone was auto spamming a channel. The bot caught the initial spam, gave them the 10 minute mute, as expected. However, after they were unmuted, the spam continued, at the same rate and enough that it should have triggered a second mute. It didn't. This needs to be investigated.

[sco1]

at the same rate and enough that it should have triggered a second mute

Are you sure this is true? There really isn't enough information here to diagnose what, if anything, needs to be changed here.

[SebastiaanZ]

I checked and they did not seem to have had activity after their first mute that would trigger an AntiSpam rule normally. Currently, AntiSpam rules look at activity in a single channel, not activity spread out over multiple channels.

[MrHemlock]

And I think that's worth looking into as a tweak, at the very least.

[SebastiaanZ]

In addition to checking the rules for a relevant chunk of channel history, we could also check the rules against a chunk of user history. Downside is that we'd need another async for history call, but it would catch people spamming messages across channels.

[MarkKoz]

Is something still being investigated?

Can someone clarify what exactly needs to be actioned for this issue? Has the goal been changed to adjust filters to detect spam across channels?