Yahoo is one of the many technology companies demanding reforms on US surveillance laws, and now says it's taken additional security measures to protect data it handles. On Wednesday, the company announced that it's been encrypting traffic from its data centers since the beginning of this week, and plans to add encryption to additional services like Yahoo Messenger. That's on top of existing measures that let web users access secured versions of its various properties like Yahoo News, Sports, and Finance. "Hundreds of Yahoos have been working around the clock over the last several months to provide a more secure experience for our users and we want to do even more moving forward," wrote Alex Stamos, Yahoo's chief information security officer in a blog post. "Our goal is to encrypt our entire platform for all users at all time, by default."