
Zalo is an extremely popular messaging app that stores a lot of personal information and supports important business communications. However, this also makes your account a target for curious individuals or scammers. Criminals often attempt to log in to your account on another device such as an unfamiliar computer or phone in order to quietly monitor content. Knowing how to perform checks and upgrade security will help you feel secure while using this platform.
Because Zalo stores personal information and supports business communications, the account can be a target for criminals who want to monitor content by logging in from another device.
To determine whether someone is secretly reading your messages, review the login history on Zalo for both Android and iPhone. First, open the app, go to Profile, select Account and Security. Then look for the Devices logged in section to see the list of computers or phones that have access to your account.
If you spot a device you don’t recognize, your account may have been compromised. On this screen, select the suspicious device to view the login time details, then quickly tap Log out this device to cut off access. Additionally, you should check the Recently logged out devices section to review whether your account has previously been accessed by others.
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Immediate security measures are advised when you suspect something is wrong. The first step is to change to a stronger password through the Account and Security settings. Then enable a lock for the Zalo app on your phone. By setting a 4-digit PIN or using biometrics such as fingerprint or facial recognition, others who borrow your phone cannot open the app and read messages.
Be cautious of unfamiliar QR codes. There are many scams offering "read my messages" services that try to lure you to scan QR codes, through which they can steal control of your account.
Enable two-factor authentication and hide private chats
To prevent future intrusions, two-factor authentication is the strongest shield. When enabled, any unfamiliar device attempting to log in must enter the OTP code sent to the verified phone number. This prevents criminals from accessing the account even if they know the password.
For conversations containing highly sensitive information, you can proactively hide them using the Hide chats feature. In the chat interface with the person, tap the settings icon in the top right, enable Hide and set a separate PIN. The conversation will disappear from the main screen. To resume messaging, simply search for that person by name and enter the PIN. An intruder who gains access to the account will not be able to locate or read the hidden content.