Alright, back on Mastadon after many a year away from it after dabbling awhile back. Maybe I'll be here a bit longer :)

IOC.exchange

INDICATORS OF COMPROMISE (IOC)
InfoSec Community within the Fediverse. Newbies, experts, gurus - Everyone is Welcome! Instance is supposed to be fast and secure.

We have a Getting Started Guide here: https://ioc.wiki/mastodon

HAVE FUN and STAY SAFE!