Social networking firm Twitter has acquired Dasient, a web and ad-scanning security company.
California-based Dasient, which provides website and advertising anti-malware scanning technology through its Malware Analysis Platform, announced the acquisition in a blog post on Monday.
"By joining Twitter, Dasient will be able to apply its technology and team to the world's largest real-time information network," the company said. "As part of this merger, Dasient is winding down its business and is no longer able to accept new customers."
Dasient has three flagship products: Web Malware Protection Suite, a website scanning and zero-day malware detection tool; Anti-Malvertising for Ad Networks, which scans for malicious adverts; and Web Protection API, which allows customised scans of individual domains and URLs.
Twitter's business model is advertising-based, and revolves around customers buying sponsored Tweets.
Twitter has expanded recently. The Summify news aggregation service announced last week that it had been acquired by Twitter.