Many users forget to log out of their WhatsApp accounts when they use another device, leaving their chats vulnerable to being read by others. To prevent this, WhatsApp has a feature called "Linked Devices" that allows you to see all the devices where your account is currently active.

To access this feature, open your WhatsApp app and tap on the three-dot menu icon on the top right corner. From the dropdown menu, select "Linked Devices." This will display a list of devices where your WhatsApp account is logged in. You can see details such as the device type and last active time, helping you identify any unknown or unauthorized login.

If you find any unfamiliar device in the list, you can very easily remove access. Simply tap on the device name and choose the "Log Out" option. This will immediately disconnect your WhatsApp account from that device, ensuring that no one else can read your chats.