You may have noticed emails from Twitter, Facebook, eBay or many other companies about privacy coming into your inbox this week.
The reason is because the European Union is rolling out a new privacy rule today.
Its goal is to give people more control over what's shared about them on the internet.
The rule requires companies to get consent from users when it comes to using their personal information.
Tech analysts recommend carefully reading your privacy changes in your settings before you accept or delete.