LINE Messaging Bugs Open Asian Users to Cyber Espionage

darkreading

November 21, 2025 at 8:18 PM

Summary

The LINE messaging app has significant security vulnerabilities due to its leaky custom protocol, which can lead to message replays, impersonation attacks, and exposure of sensitive information. These issues pose serious risks for users in Asia, potentially aiding geopolitical adversaries in cyber espionage activities.

Original Article Summary

In a potential gift to geopolitical adversaries, the encrypted messaging app uses a leaky custom protocol that allows message replays, impersonation attacks, and sensitive information exposure from chats.

Impact

LINE messaging app

In the Wild

Unknown

Timeline

Newly disclosed

Remediation

Implement stronger encryption protocols, conduct security audits, and educate users on potential phishing and impersonation risks.

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