Unlocking free WiFi on British Airways

The article discusses the author's experience unlocking free WiFi on a British Airways flight through the messaging plan offered to British Airways Club members. The author explores how the system identifies messaging apps and theorizes that the use of Server Name Indication (SNI) plays a role in this identification. They conduct tests to manipulate the SNI to access unrestricted browsing on the flight, highlighting potential security implications and the limitations of SNI-based restrictions. The author also touches on Encrypted Client Hello (ECH) as a potential solution to SNI leakage and shares their successful experimentation with ECH configurations during the flight. The article concludes with a caution against blind trust in SNI for security purposes.