Seeking havens

摘要

1.Islamist extremists have used the decentralised RocketChat platform since December 2018, although services built on its open-source software are vulnerable to de-hosting or distributed denial-of-service attacks. 2.Sporadic Islamist extremist activity on RocketChat derivatives such as TechHaven suggests that the platform is not set to replace Telegram, but that it is being quietly maintained as a potential back-up. 3.In the longer term, the Islamic State and its supporters are likely to continue experimenting with decentralised platforms, taking advantage of the increased resilience that they offer.