Facebook suspends another analytics firm amid questions over surveillance

Crimson Hexagon suspended as concerns surface over company's federal contracts and ties to Russia and Turkey

Facebook has suspended a social media analytics firm from accessing user data while it investigates potential violations of its policy barring surveillance.

The firm, Crimson Hexagon, boasts an impressive list of blue chip clients and claims to have collected more than 1tn public social media posts from Facebook, Instagram, Twitter, Tumblr, and other sources. It uses artificial intelligence and image analysis to monitor social media and provide customers with insights into public sentiment about their brands.