Valve to crack down on Counter-strike: Global Offensive gambling via the Steam API

The Steam API is being used to power potentially illegal gambling, and Valve is not amused.

Valve has finally started cracking down on Steam powered gambling

Valve Updates Code of Conduct, Explicitly Bans Gambling

CSGO betting sites close in the wake of Valve's crackdown - Polygon

CSGO skin gambling under pressure as Valve tightens Steam rules

Valve Takes a Stand Against CSGO Skin Gambling on Steam

Valve demands that gambling sites cease operations through Steam

How Valve is Profiting from Steam's Back-Door Casinos

Final claim in CS:GO skin gambling lawsuit dismissed because

Valve says it's going after gambling sites that use Steam - Polygon