https://www.wired.com/story/opinion-isis-is-now-harder-to-track-onlinebut-thats-good-news/

Over the last month, Telegram messenger launched an account removal campaign against its most notorious userbase: ISIS. The company’s newly found initiative was profoundly wide-reaching and effective, shaking a long-settled snow globe and scattering ISIS users across scores of different platforms.

Rita Katz (@Rita_Katz) is the executive director and founder of the SITE Intelligence Group, the world’s leading non-governmental counterterrorism organization specializing in tracking and analyzing the online activity of the global extremist community.