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Line adds end-to-end encryption

However, the company has plans to switch it on by default for all users.

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Line, the dominant mobile messaging app in many parts of Asia, has just announced that it’s updating its service on all platforms to take advantage of end-to-end encryption. Also noted is that full encryption will be enabled only when both the parties have Letter Sealing enabled on their devices. Roll out of encryption feature should increase confidence in use of app. Well, apparently, for LINE, it still “sealing” the messages.

LINE Messenger, a popular cross-platform messaging app has added a new security-focused feature, Letter Sealing. For now the feature is enabled in one-to-one conversations and protects messages and location sharing, and additional features will be covered in the future. “This eliminates the possibility of a third party, including the LINE servers, from removing the seal on messages”. If both users have the correct app version, the Sealing is turned on by default.

To be able to enjoy Letter Sealing, your LINE app must be updated to the 5.3.0 version or the latest and you need to manually turn it on in the settings.

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“This method of secure communication facilitates uncrackable encryption by scrambling the chat content with a key, which is stored only in user device instead of a centralised server”. LINE has also other security measures, including hidden chats, time-limited messages, passcode lock and a four-digit security pin.

Line Letter Sealing