A single contact in my #signal list which I have an empty chat with (not communicated in years) keeps sending "chat session refreshed" like no tomorrow. Two updates yesterday, roughly 200+ (yes, two hundred) in the last hour.

I blocked the contact, but am still receiving a plethora of "chat session refreshed"

Does this match any known attack patterns, or does anyone have another explanation?

I am wary of replying in case it's part of some attack pattern.

#retoot and reasonable speculation OK