LINE

Security

Unauthorized Logins

Unauthorized Logins

Account stolen toggle

If your LINE account was stolen by someone logging in without your authorization, please contact us with the details using the Inquiry Form. We will delete the account to prevent any further unauthorized use. 

 

If you had any items, we can restore them after confirming they were on your old account. 

 

The following can be restored:

• The right to use your paid items, such as LINE stickers and themes (including those received as gifts)
• Your purchase history and Coin balance
• Your Credit purchased on LINE STORE

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How to protect your account from unauthorized logins toggle
There have been many cases where unauthorized third parties have logged in to internet services using email addresses and passwords leaked from other services. Please note that no information registered to LINE, such as phone numbers, email addresses, and passwords, have been compromised.

If you are using the same email address and password for LINE as another service, we strongly recommend changing your password.


Reported cases of unauthorized logins
The following types of messages are often sent by a third party when an account is stolen. If you receive messages asking you to do any of the following from a friend, it is possible their account may have been stolen:

• Help me buy prepaid cards
• Help me buy iTunes cards
• I’m in trouble and need you to transfer money to my bank account

As they may change the content of their messages at any time, you should also suspect if your friend’s account has been stolen in the following cases:

• The messages don't sound like the way your friend talks
• A friend whom you have not spoken to for a long time suddenly asks you for money
• The friend's language is unnatural

Your friend’s account was stolen
If you suspect that your friend’s account may have been stolen, please contact them outside of LINE (in person, by text, by phone, or on a social network) to let them know.

Your account was stolen
If you are suddenly unable to access your account even though you did not make any changes to it, or if your friend contacts you to let you know that your account has been stolen, please see the following article:

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Account Security

Can anyone see information like my phone number, LINE ID, or email address? toggle
Unless you share this information yourself on another site or with a friend, no one will be able to see it.
Note: The name you set on LINE, your profile photo, and status message will be visible to others.

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My device was lost or stolen toggle
If your device has been lost or stolen, you should take the following steps to make sure that no one can use your LINE account.

• Transfer your LINE account or create a new one with the same registered phone number.
For information on how to transfer your account, see the Help articles below.




For information on how to create a new LINE account with the same phone number, see this Help article.

If you create a new account, any paid items, chat history, friends, groups, and data for related services (including your LINE Pay balance, manga, and games) that you had will be deleted. Once this data is deleted, it cannot be restored.

If you cannot transfer your account or create a new one, or are unable to finish the verification process with the same phone number (e.g. because your phone number changed), please contact us here.

• Contact your mobile service provider.
Be sure to contact your contracted mobile service provider and let them know that your device was lost or stolen.

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My friends are seeing duplicates of my account toggle
If you create a new LINE account on a new device without deleting the account on your previous device, you will end up having two accounts.

Your old account cannot be deleted if you are unable to use your previous device anymore. Please ask your friends to block your old account in this case.

Please see the following article for help with blocking friends:

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Hiding your LINE ID from search results toggle

To hide your LINE ID from searches:

1. Go to the Home tab > Settings > Edit profile.

2. Turn OFF Allow others to add me by ID.

 

Tap here to open the Profile settings from your smartphone.

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I got a login notification from the LINE official account toggle
The message you received is from the official account operated by LINE Corporation.

As part of our efforts to strengthen security, a message is sent when your account is transferred or tries to log in to LINE services.

If you received a notification but don't remember logging in, please check the following.

• If you can use LINE
Someone else may be trying to log in using the information registered to your LINE account.

To prevent others from logging in to your account, please change your password. For more information, see this Help article.

If you're still receiving messages after changing your password, please change the email address registered to your LINE account. See this Help article for more information.

• If you cannot use LINE
Your LINE account may have been stolen by a third party. Please contact us via the Inquiry Form.

The content of the notification message will differ depending on what your account is trying to do. For more information, please see the following Help articles.





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Can someone see my profile if I have their phone number but they don’t have mine? toggle
If a person with your mobile phone number registered in their device's contacts starts using LINE, they will automatically be added to your friend list.
Note: They will not be added automatically if you have the Auto-add friends setting turned OFF.

If your phone number is not in the person's contacts, you will appear under Friend recommendations. In this case, your LINE display name, profile photo, status message, and profile cover photo will be visible, but the person won't be able to see any of your other information.

The only way to remove yourself from someone else’s friend recommendations is to delete your account. Also, if you have already been added as a friend, you'll continue to appear in the person's friend list unless your account is deleted.

For information on deleting your account, please see here.

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Chat Security

I got a login notification from the LINE official account toggle
The message you received is from the official account operated by LINE Corporation.

As part of our efforts to strengthen security, a message is sent when your account is transferred or tries to log in to LINE services.

If you received a notification but don't remember logging in, please check the following.

• If you can use LINE
Someone else may be trying to log in using the information registered to your LINE account.

To prevent others from logging in to your account, please change your password. For more information, see this Help article.

If you're still receiving messages after changing your password, please change the email address registered to your LINE account. See this Help article for more information.

• If you cannot use LINE
Your LINE account may have been stolen by a third party. Please contact us via the Inquiry Form.

The content of the notification message will differ depending on what your account is trying to do. For more information, please see the following Help articles.





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Do I need to worry about other people being able to see my chats? toggle

We respect your privacy above all else, and your sent/received messages and other information are treated with the highest level of security. LINE has established strict internal rules to ensure that your messages are protected.

 

Nothing you send or receive can be viewed by LINE or any third parties not participating in a chat.

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Preventing messages from strangers toggle
To stop strangers from messaging you:
1. On the Home tab, tap Settings > Privacy.
2. Turn on the option for Filter messages.

Tap here to open the Privacy settings from your smartphone.

With the Filter messages setting turned on, you will no longer receive messages from strangers, but you also will not receive messages from any acquaintances that are in your Friend recommendations.

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Blocking LINE Game messages toggle

To block messages from LINE Game apps:
1. Go to the Home tab > Settings > Notifications > Authorized apps.
2. Tap the game you want to block messages from.
3. Turn off Messages and/or Notifications.
Note:
- If you turn off Messages, you will not receive messages but will continue to receive any gifts your friends send you.
- If you turn off Notifications, you will still receive LINE messages but will not be notified when they arrive. 

 

Tap here to open the Authorized apps screen from your smartphone. 

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Letter Sealing

What is Letter Sealing? toggle
Letter Sealing is a feature that provides end-to-end encryption (E2EE) for chat messages. E2EE is a communication system designed so that messages saved on our servers are encrypted and cannot be read by anyone except the sender and receiver of the message.

Once the sender and receiver have both turned on Letter Sealing, they will be able to start sending messages with added security.

The following information will be encrypted:

• Text messages (not including messages sent through other services like YouTube)
• Location information
• 1-on-1 voice/video calls
Note: We plan to expand Letter Sealing’s functionality in the future.

If you use LINE for PC after turning on Letter Sealing, you'll be required to verify your identity the first time you send a message.

For information about verifying your identity to use Letter Sealing on LINE for PC, see this Help article.

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Turning on Letter Sealing toggle
Letter Sealing is now turned on by default when you download LINE. As part of our efforts to strengthen the app's security, we've made it so this setting can no longer be turned off.

If you've been using LINE since before these specification changes were made and have Letter Sealing turned off, you can protect your messages by turning Letter Sealing on manually from the smartphone version of LINE.

To turn Letter Sealing on:
1. Tap the Home tab > Settings > Privacy.
2. Turn ON Letter Sealing.

Tap here to go to the Settings menu from your smartphone.

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The Letter Sealing identify verification screen isn't appearing toggle
If you're trying to verify your identity so you can use Letter Sealing on LINE for PC, but the verification code entry screen isn't appearing in LINE on your smartphone, restart the smartphone app and try verifying your identity again by referring to this Help article.

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About Letter Sealing key fingerprints toggle
Key fingerprints are unique encryption keys that Letter Sealing gives to each user so they can send messages to one another safely and securely.
Note: The actual keys are kept secret and will not appear in LINE chats.

If your key fingerprint matches your friend's, it means your chat is securely encrypted. To check whether your key fingerprints match, follow the steps below.
Note: Key fingerprint confirmation is optional.

1. Tap the menu icon at the top of a chat screen.
2. Tap This chat is protected with Letter Sealing at the bottom of the screen.
3. Compare the key fingerprints on your device and your friend's device.
Note: To compare key fingerprints with your friend, we recommend meeting face-to-face or using a form of communication you trust.

If "This chat is protected with Letter Sealing" doesn't appear, it means Letter Sealing is turned OFF. To turn Letter Sealing ON, follow the steps in this Help article.

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The lock icon no longer appears at the top of a chat toggle
To check whether a chat is protected with Letter Sealing, tap the menu icon at the top of the chat screen. If Letter Sealing is turned ON, you'll see "This chat is protected with Letter Sealing."
Note: You'll also see a lock icon at the beginning of the sentence.

If "This chat is protected with Letter Sealing" doesn't appear, see this Help article.

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Friend Security

Can someone see my profile if I have their phone number but they don’t have mine? toggle
If a person with your mobile phone number registered in their device's contacts starts using LINE, they will automatically be added to your friend list.
Note: They will not be added automatically if you have the Auto-add friends setting turned OFF.

If your phone number is not in the person's contacts, you will appear under Friend recommendations. In this case, your LINE display name, profile photo, status message, and profile cover photo will be visible, but the person won't be able to see any of your other information.

The only way to remove yourself from someone else’s friend recommendations is to delete your account. Also, if you have already been added as a friend, you'll continue to appear in the person's friend list unless your account is deleted.

For information on deleting your account, please see here.

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Why does LINE utilize the contact information on my smartphone? toggle
When users carry out the procedures listed below, LINE will access the information required in the users’ contacts list/address book to make it easy for users to find their close friends (Only the telephone numbers and mobile email addresses in your contact information will be transferred to our servers. All information will be encrypted.)

1. At the registration screen, when users select OK at the “Your Address Book will be sent to LINE’s server” dialogue.
2. When the Auto-add friends feature is switched ON in Settings or when users push the circular icon next to the Last Auto Add dialogue, and then select OK at the “Your Address Book will be sent to LINE’s server” dialogue.

LINE will add mutual contacts to your Friends list automatically. If only one of you has the other as a contact, the one who has the contact information will be added to the other's Friend Recommendations list, while the recommended person will be added to the other's Friends list.

Your own phone number, and other information obtained from your contacts list/address book (phone numbers and email addresses) will not be disclosed and will be protected as follows:

1. Your contact information will be used only if you agree to the terms & conditions of LINE when signing up. The terms and conditions describe when and how LINE will use your personal information.
2. If you agree to allow LINE to find your friends, the telephone numbers and mobile email addresses in your contacts list/address book will be sent to our servers.
At this time, the required contact information will be encrypted and securely transferred to our server.
3. We use encrypted text when comparing your information with existing user information.

Please visit the following web page for more detailed information on our privacy policy:

https://line.me/en/terms/policy/

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How will my contact information be stored on the servers? toggle
When you agree to allow LINE to find your friends, the information sent to our servers from your contact list (phone numbers and mobile email addresses) will be encrypted and securely stored on our servers. For more information on our privacy policy, please click on the link below.

https://line.me/en/terms/policy/

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Preventing your contacts list information from being sent to LINE toggle
To stop your contacts information from being sent to LINE:
1. Go to the Home tab > Settings > Friends.
2. Turn Auto-add friends OFF.

If you want to remove a user who has already been added as a friend, see this Help article.

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Can other people view my Friends list? toggle
Please be assured that no other users can view your Friends list.

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Someone is impersonating me on LINE. toggle
If users select to send their phonebook data to LINE’s servers upon registering to LINE, phone numbers in their phone books will be used to search for their friends who are LINE users.
If we find those users, they will appear in the user's [Friends] list under the names registered in the user's phonebook.

Therefore if you have stopped using your number and someone else obtains it, a third party may be registered on your friends' [Friends] list under your name.

Please ensure that your friends do not have you registered under multiple phone numbers/mobile email addresses within their phonebook, and also check that they have not saved you under any details which are out of date such as previous phone numbers.

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Preventing others from adding you toggle

If you don't want to be automatically added as a friend by someone who has your phone number, follow the steps below.
Note: These steps will not affect existing friends.

 

1. Go to the Home tab > Settings.
2. Tap Friends.
3. Turn OFF Allow Others to Add.


Tap here to open the Settings menu from your smartphone.

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Preventing ID search toggle

To prevent others from being able to search for your ID:

1. Go to the Home tab > Settings > Profile.
2. Turn OFF Allow others to add me by ID.


Tap here to access the Profile menu from your smartphone.

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Filtering messages from non-friends toggle

To filter messages from users who are not your friends:

1. Go to the Home tab > Settings.
2. Tap Privacy.
3. Turn ON Filter messages.


Tap here to open the Settings menu from your smartphone.

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Blocking accounts that appear in your friend recommendations toggle
To block accounts that appear in your friend recommendations: 
1. Tap the Home tab > your friend list > Friend recommendations.
2. Tap and hold the name of the account that you want to block.
3. Tap Block.
Note: It may take some time for the changes to be applied.

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Blocking accounts toggle
When you block an account on LINE:
• You'll no longer be able to receive chat messages or voice/video calls from that account.
• It will appear in Blocked users instead of your friend list.

Blocking an account doesn't completely remove it as a friend or friend recommendation. If you'd like to do so, see this Help article.

To block an account:
1. Tap the Home tab > your friend list.
2. Tap and hold the name of the account that you want to block.
3. Tap Block > Block.

To unblock an account:
1. Tap the Home tab > Settings.
Note: Tap here to open Settings from your smartphone.
2. Tap Friends.
3. Tap Blocked users.
4. Tap Edit next to the account you want to unblock.
5. Tap Unblock.
Note: It may take some time for the changes to be applied.

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Deleting hidden or blocked accounts toggle
Unlike hiding or blocking, deleting an account from your friend list cannot be undone. Please keep this in mind if you're thinking of deleting the account of someone who you don't have any other way to contact.

To delete an account:
1. Tap the Home tab > Settings.
2. Tap Friends.
3. Tap Hidden users or Blocked users.
4. Tap Edit next to the account you want to delete.
5. Tap Delete.

Tap here to open the Settings menu from your smartphone.

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Deleting accounts toggle
If you delete an account from your friend list, it cannot be restored. Please keep this in mind when deleting people who you don’t have any other way to contact.

To delete an account:
1. Tap the Home tab > your friend list.
2. Tap and hold the account you want to delete.
3. Tap Delete > Delete.

If there is a chance that you will want to restore an account later, try hiding or blocking it.

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Timeline and Profile Security

Hiding Timeline posts from new friends toggle
By default, Timeline and profile posts are automatically made visible to newly added friends. To change this setting, follow the steps below.

1. From the Home tab, tap Settings.
2. Tap Timeline.
3. Turn Allow new friends OFF.

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Hiding/unhiding posts by specific friends on Timeline toggle
Posts made by your friends will appear on Timeline. If you don't want to see posts from a specific friend, follow the steps below to hide them: 
1. Tap "..." at the top right of the post that you want to hide.
2. Tap Hide all updates from XXXX > Hide > OK.
Note:
- All of the friend's old posts will be deleted from Timeline and their new posts will no longer appear.
- The friend will not be notified when you hide their posts.

To start seeing new posts from a friend again after hiding them: 
1. Go to Timeline and tap your icon at the top right > Manage Timeline updates.
2. Tap Friends.
3. Enable the option next to the relevant friend.
Note: Disabling the option next to your friend will hide their posts again.

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On my profile, I see a post that was only set to share with specific friends on Timeline toggle
Posts you set to share only with yourself or specific friends will also appear on your profile. However, the content of those posts will only appear on your device.

When you choose a privacy setting other than Public for a Timeline post, it will not appear to friends outside of that setting or whom you have set as Excluded in your Timeline Share settings.
Note: The content of posts set to Only Me will not appear to anyone but yourself.

If a user other than your friends or whom you've set as Excluded in your Timeline Share settings visits your profile, they will only see posts that you've made Public.

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Hiding and sharing posts toggle
You can hide a Timeline or profile post from certain friends using one of the methods below.

To hide a post when you make it (for LINE versions 6.6 and later):
Tap the privacy settings (Friends, Public, Only me, or Close friends) at the top of the post editing screen.

If you select Only me from the privacy settings, you'll be the only person who can see the post.

If you only want to share a post with certain friends, see here.

To hide your posts from Settings:
1. From the Home tab, Settings > Timeline.
2. Tap the Included tab at the top of the Share settings screen.
3. Tap Exclude next to the name of the friend(s) you want to hide your posts from.

If you exclude a friend from your share settings, they will no longer be able to view any of your posts.

To share your posts again with someone you excluded:
1. From the Home tab, Settings > Timeline.
2. Tap the Excluded tab at the top of the Share settings screen.
3. Tap Include next to the name of the friend(s) you want to share your posts with.

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Who can see your Timeline posts toggle
If both you and another user have added each other as friends on LINE, you'll be able to see each other's Timeline posts. Posts will not appear to either of you if only one of you has added the other as a friend.
Note: If you make a post Public on Timeline, users other than your friends will also be able to view it.

If you don't want a post to be viewed by certain friends, please configure your Share settings for those friends.

To hide your Timeline posts from friends you add in the future, please turn the Allow new friends setting OFF.

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My friend's Timeline posts don't appear anymore toggle
If a friend's Timeline posts no longer appear, it may be that:
• You are blocking your friend.
• Your friend has blocked you.
• You added your friend to your Timeline hidden list.
• Your friend's Share settings for Timeline are set to Excluded.
Note: If you've created a new account, please ask your friend to check their Share settings.

If you've blocked your friend or added them to your Timeline hidden list, you can view their Timeline posts again by unblocking them or removing them from your Blocked users list or Timeline hidden list.

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