ALEXANDRIA, Va., March 26 -- United States Patent no. 12,261,858, issued on March 25, was assigned to MICROSOFT TECHNOLOGY LICENSING LLC (Redmond, Wash.).

"Detecting and mitigating abusive network activity based on versioned browser usage" was invented by Cormac E. Herley (Bellevue, Wash.), Fang Tu (Shoreline, Wash.) and Jayadev Pillai (Bellevue, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for detecting and mitigating abusive network activity based on versioned browser usage are performed by systems and devices. Usage values for network activity of legacy web browser versions are determined, where the usage values represent benign network activity associated with active instances of the lega...