There was trouble of TL and instance down for several hours, but it was solved.
The cause was an attack by an external user.

@Knzk what do we know about the attacker? and what kind of attack was it?

if you don't mind me asking

@kew
We increased the load with a large number of reply transmissions using the tool.
I found a problematic user from the log data.
I think that it is safe because I blocked the user in question!!!

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