Facebook dismisses a researcher who says multimedia content sent via Facebook Messenger can be intercepted by a third party under certain conditions.

Google is adding HTTP Strict Transport Security (or HSTS) to the Google.com domain, an extra layer of protection that prevents visitors from using a less secure HTTP connection. By using HSTS, visitors following HTTP links to Google.com will be automatically redirected to the more secure HTTPS version of the Google domain. The effort, announced Friday, is...