Open-source intelligence analysts reported that Crooks didn’t appear to use mainstream social media channels such as Facebook or Instagram and had an almost negligible internet footprint, which is highly unusual for a 20-year-old. Instead, analysts said that Crooks corresponded with friends and associates on a Discord server that they were now trying to access.
Discord servers are restricted ring-fenced sections of the internet. They are often used by gaming groups and communities as secure chat rooms but are also used by fringe organisations to push their ideologies and discuss wild conspiracy theories and plots.
Nobody is using a Discord server as a "secure" chat room. What is that even supposed to mean?
"The gunman's Discord server mod refused to send me an invite link. Their security is un-breachable."
The highest form of security: not letting lame people join your club.
I will simply not invite the CIA to my Marxist Leninist Maoist Guerilla server
Some people are just deeply unserious and think Discord is encrypted (it isn't).
It's to make tech illiterate boomers angry
its not secure but it is "private" enough for chatting/gaming with randoms (if your standards are low for data harvesting)