Despite being only moderately skilled, CopyKittens has exfiltrated large volumes of data since at least 2013.
Article Link: https://www.darkreading.com/vulnerabilities---threats/iranian-cyber-espionage-group-copykittens-successful-but-not-skilled/d/d-id/1329466?_mc=rss_x_drr_edt_aud_dr_x_x-rss-simple