Moscow/New Delhi, April 21: Twitter has banned Russia-based cyber security firm Kaspersky Lab from advertising on its platform, stating that the company “operates using a business model that inherently conflicts with acceptable Twitter Ads business practices.” In an open letter to Twitter CEO Jack Dorsey, Kaspersky Lab’s Founder Eugene Kaspersky has termed the move as “potential political censorship”. “At the end of January, Twitter unexpectedly informed us about an advertising ban on our official accounts where we announce new posts on our various blogs on cybersecurity (including, for example, Securelist and Kaspersky Daily) and inform users about new cyberthreats and what to do about them,” Eugene wrote on Friday. “In a short letter from an unnamed Twitter employee, we were told that our company ‘operates using a business model that inherently conflicts with acceptable Twitter Ads business practices,’” he added.