You mean apart from basically every other mainstream tech company? [1] [2] [3]
[1] https://www.washingtonpost.com/business/economy/google-to-al...
[2] https://www.wired.com/2015/10/facebook-now-warns-users-of-st...
[3] https://threatpost.com/twitter-warns-some-users-of-nation-st...