Logging out of online accounts like Atlas is good practice and important for your online security, especially on shared or public computers. Logging out closes your session and stops the next person using the computer from accessing your account.
How to log out
Click the Account button on the right of the menu bar at the top of the page.
On the drop-down menu, click Log out.
Note: If after logging out you're trying to log in to a different account but keep getting signed back into the previous one, it's likely because your browser has stored cookies and cached data from the earlier session. Clearing your cache should resolve it.