https://www.reuters.com/article/us-twitter-kaspersky-lab/twitter-bans-ads-from-russias-kaspersky-lab-idUSKBN1HR2RM

Twitter Inc said on Friday that it has banned ads from Russia's Kaspersky Lab, charging that the company's business model conflicts with the social media platform's advertising rules and citing U.S. claims that the firm has ties to Russian intelligence agencies.