https://www.theverge.com/2018/4/4/17200644/google-youtube-shooting-incident-worldwide-security-increase-response

In the aftermath of the shooting at YouTube's headquarters in San Bruno, California yesterday, the company has announced plans to increase security at all of its offices worldwide. This is intended to “make them more secure not only in the near term, but long-term,” YouTube says. The move reflects a growing concern in Silicon Valley that the effects of increasingly toxic and partisan online behavior may translate into violent offline actions.

YouTube's statement was released through Google's Twitter account for communications; it's not clear whether Google itself will be implementing stronger security measures beyond YouTube. The Verge has contacted Google for comment.