Is your browser up to date?
If you are one of the many users who use Google Chrome as your browser, make sure it is updated. Google announced a zero-day update. A zero-day update is the most urgent update that you can have. As of now, Google hasn't announced what the update does, but typically zero-day updates are security risk related
Here is a quick tutorial:
First click on the 3 dots on the top right corner
Settings
About Chrome (left menu)
Once you click on "About Chrome" it should auto update.