LINE Official accounts
This Help article covers the notification messages sent from the LINE official account (system account) that LINE manages.
Note: A system account refers to an account that appears with "LINE" in the name.
Note: SSO is an authentication shortcut that lets you log in to websites without entering your email address and password by using information from a website you've already logged in to. This feature may be omitted if the LINE app is already installed on your device.
If you don't remember logging in to the service or site mentioned, log out by using the link in the notification message.
Note: For sites that don't use LINE Login v2.1, you'll receive a regular login notification.
SSO type login notifications will appear as one of the messages below.
Note: The first sentences in these messages may not appear.
For successful logins:
"We've detected a login to {service/site name} on {iPad, Mac etc.}".
IP address: {ww.xxx.yyy.zzz}
Location: {country/region}
If this wasn't you, you can log out here. We also recommend changing your password.
For unsuccessful logins:
"We've detected an unsuccessful login attempt to {service/site name} on {iPad, Mac etc.}".
IP address: {ww.xxx.yyy.zzz}
Location: {country/region}
If this wasn't you, you can check which devices are logged into your account here. We also recommend changing your password.
See Checking what devices are logged in to your LINE account and LINE services for details.
If you received this message but aren't trying to log in, it means a third party is trying to log in to your LINE account using your email address and password.
See My LINE account was or may have been stolen (logged in to without my authorization) if you received a notification but don't remember logging in.
You'll receive this message when the phone number registered to your LINE account is used in the phone number verification of another account.
If you didn't verify your phone number, you may have received this message because:
• A third party mistakenly entered your phone number to verify their account; or
• A third party tried using your phone number to verify an account.
Be sure not to share the verification code you receive with anyone else.
If the chat message says you couldn't log in:
It means there was an attempted login to LINE with your registered email address but it failed because your password was entered incorrectly.
If the chat message says you logged in:
It's to let you know when your account has been logged into with one of the following methods.
• An email address/password
• A QR code
• Your device unlock method
If you received this message even though you did not try to log in to LINE, it means that someone else tried to log in using your email address and password. If you don't remember logging in yourself, see My LINE account was or may have been stolen (logged in to without my authorization).
When Allow login is turned off in your LINE settings, your account cannot be logged into with LINE for PC or iPad, even if your email address and password are entered correctly.
Note: You'll still receive a notification message if your password is entered incorrectly on the login screen.
Note: A system account refers to an account that appears with "LINE" in the name.
I got a notification about a detected login
When you've logged in to a site that uses LINE Login v2.1 and log in to another site using Single Sign On (SSO) authentication, the LINE official account will send you a notification as a security measure.Note: SSO is an authentication shortcut that lets you log in to websites without entering your email address and password by using information from a website you've already logged in to. This feature may be omitted if the LINE app is already installed on your device.
If you don't remember logging in to the service or site mentioned, log out by using the link in the notification message.
Note: For sites that don't use LINE Login v2.1, you'll receive a regular login notification.
SSO type login notifications will appear as one of the messages below.
Note: The first sentences in these messages may not appear.
For successful logins:
"We've detected a login to {service/site name} on {iPad, Mac etc.}".
IP address: {ww.xxx.yyy.zzz}
Location: {country/region}
If this wasn't you, you can log out here. We also recommend changing your password.
For unsuccessful logins:
"We've detected an unsuccessful login attempt to {service/site name} on {iPad, Mac etc.}".
IP address: {ww.xxx.yyy.zzz}
Location: {country/region}
If this wasn't you, you can check which devices are logged into your account here. We also recommend changing your password.
I got a message saying someone logged in to my LINE account on another device
This message is sent when the information you registered on LINE is used to transfer or log in to your LINE account.See Checking what devices are logged in to your LINE account and LINE services for details.
If you received this message but aren't trying to log in, it means a third party is trying to log in to your LINE account using your email address and password.
See My LINE account was or may have been stolen (logged in to without my authorization) if you received a notification but don't remember logging in.
I got a message saying another device's LINE app requested to verify my phone number
Important: The contents of this section only apply to LINE accounts created with LINE versions earlier than 13.11.0 if you're not using LINE in Hong Kong, Japan, Korea, Taiwan, or Thailand.You'll receive this message when the phone number registered to your LINE account is used in the phone number verification of another account.
If you didn't verify your phone number, you may have received this message because:
• A third party mistakenly entered your phone number to verify their account; or
• A third party tried using your phone number to verify an account.
Be sure not to share the verification code you receive with anyone else.
I got a message about a login/unsuccessful login attempt to my LINE account with LINE for PC or iPad
These messages are sent when your account tries to log in to LINE for PC or iPad.If the chat message says you couldn't log in:
It means there was an attempted login to LINE with your registered email address but it failed because your password was entered incorrectly.
If the chat message says you logged in:
It's to let you know when your account has been logged into with one of the following methods.
• An email address/password
• A QR code
• Your device unlock method
If you received this message even though you did not try to log in to LINE, it means that someone else tried to log in using your email address and password. If you don't remember logging in yourself, see My LINE account was or may have been stolen (logged in to without my authorization).
When Allow login is turned off in your LINE settings, your account cannot be logged into with LINE for PC or iPad, even if your email address and password are entered correctly.
Note: You'll still receive a notification message if your password is entered incorrectly on the login screen.
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