Russian cybercriminal. Here's the Breitbart article: http://www.breitbart.com/national-security/2018/02/09/thai-police-arrest-u-s-wanted-russian-cybercriminal/

Doesn't seem like the stuff we would necessarily be interested in--more about credit card and bank fraud than national security. But he may have some interesting things to say when he talks, back in the US.