This story originally appeared on Ars Technica, a trusted source for technology news, tech policy analysis, reviews, and more. Ars is owned by WIRED's parent company, Condé Nast. So Google Duo is ...

What’s happening: Duo Security is ending support for older versions of its mobile app to improve security. After March 31, versions earlier than 4.85.0 will stop working for multifactor authentication ...