Google has announced that it will enable the 2-Step verification security feature for more than 150M users by the end of the year. It will also require more than 2M YouTubers to enable 2SV as well. "2SV is the best way to keep user accounts secure, and prevent unauthorised access in case account password is compromised.", the company said in a blog post. Two-Step Verification is a security method that adds an extra layer of protection to account logins.