Mergers and acquisitions continue to spread in the global security market, with companies stepping up efforts to respond to AI security threats and treating browser security as a key battleground. Zscaler bought browser security specialist SquareX, while Sophos acquired Arco Cyber and Keycard agreed to buy Anchor.dev. In AI, companies are pushing beyond large language models toward world models, alongside fresh funding, product launches and enterprise partnerships.

Cloud security company Zscaler has acquired browser security specialist SquareX, SiliconANGLE reported on Feb. 6. Financial terms were not disclosed. SquareX has technology that blocks browser-based threats such as phishing and session hijacking by monitoring behavior inside the browser rather than relying on URL reputation or network inspection. It provides protection through a lightweight extension that works on Chrome and Edge and does not require a separate enterprise browser.