Google To Serve Ads Through HTTPS
By encrypting ads, the advertising industry can help make the internet a little safer for all users. Recently, the Interactive Advertising Bureau (IAB) published a call to action to adopt HTTPS ads, and many industry players are also working to meet HTTPS requirements.
Google has already moved all YouTube ads to HTTPS as of the end of 2014. In addition, search on Google.com is encrypted for a vast majority of users.