LINE

Chat Security

Possibility of messages being viewed by third parties toggle
As messages sent in chats are covered by the law governing privacy of communications, no LINE employee or third party, besides the chat participants themselves, will be able to view them. LINE treats the chat history and other information of its users as important personal information, and handles them with the maximum level of security possible.

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Preventing messages from strangers toggle
To stop strangers from messaging you: 
1. Settings > Privacy.
2. Turn Filter messages ON.

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, please follow the steps below.

1. Tap the settings icon > Notifications > Authorized Apps.
2. Tap the app you do not want to receive notifications for.
3. Turn OFF Receive Messages or Receive Notifications.

You will no longer receive messages from the app by turning OFF Receive Messages; however you will still receive gifts awarded to you from friends. 

By turning OFF Receive Notification, you will still receive LINE chat messages; however you will not receive notifications for them.

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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 iPad or PC after turning on Letter Sealing, you'll be required to verify your identity the first time you send a message by entering a 6-digit verification code on the smartphone version of LINE.

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