[9] Short for "Sieged Security",[10][11][12] SiegedSec's Telegram channel was first created in April 2022,[13] and they commonly referred to themselves as "gay furry hackers".

[21] In July 2023, SiegedSec sent a series of spoof emails to undergraduate University of Connecticut students using LISTSERV, falsely announcing the "Unfortunate Passing of Radenka Maric".

On November 8th 2023, SiegedSec collaborated with Anonymous Sudan with a claimed breach of Israeli telecommunications company Cellcom in an operation against Israel during the Gaza–Israel conflict.

[citation needed] In December 2023, SiegedSec announced a partnership with hacktivist group ByteMeCrew, claiming a breach against Stalkerware app TheTruthSpy.

[citation needed] SiegedSec collaborated with hacktivist group KittenSec, sharing both "lulz" and anti-NATO motives during attacks on Romania, Greece, France, Chile, Panama, and Italy.

[36][37] After releasing the Heritage Foundation chatlogs, SiegedSec announced that they would be disbanding "for our own mental health, the stress of mass publicity, and to avoid the eye of the FBI.

"[38] Following the Idaho National Laboratory attack, it was announced that the FBI as well as the Cybersecurity and Infrastructure Security Agency had been contacted to help investigate the incident.