Covered in this Briefing Note:

Terrorist financing, much like its practitioners, depends on being extremely well hidden. With disparate groups worldwide and supporters scattered around the world, these groups have taken advantage of the internet and the anonymity of cryptocurrencies to finance their operations.

In his briefing note Professor Ryder identifies how a spate of recent arrests has shown the model of state-sponsored terror is giving way to individuals acting online, using small transfers to evade detection. These arrests likely represent a fraction of the problem.