"A single boarding pass can ruin your trip."
A travel app security breach targeting airline tickets, train tickets, and boarding passes
At the airport departure hall, a traveler, leisurely waiting in line with his mobile boarding pass open, heard something unexpected at the boarding gate:
"This boarding pass has already been checked in."
He had clearly paid for it himself, and had confirmed it on his app, but someone else had already used it.
His trip was halted. His ticket was invalidated, and his entire schedule was thrown into disarray.
The cause of this incident wasn't a server error or an airline mistake.
The problem lay in the security of the travel app itself.
The Actual Problem – The Moment "Movement Permission" Was Hijacked
In travel apps, airline tickets, train tickets, and mobile boarding passes aren't simply reservations. They are mobility permissions that only the user can use.
However, in this incident, the following occurred: • A counterfeit app repackaged from a legitimate travel app was distributed.
• A boarding pass inquiry screen was copied.
• Boarding pass information retrieved from within the app was leaked.
• A third party attempted to check in and change seats first. Users believed they were using a legitimate app, but in reality, they had opened their boarding passes through a modified app.
Where did the security breach occur?
The core of the problem is simple.
• The app's authenticity was not verified.
• It was impossible to verify whether the app's internal code or resources had been altered or tampered with.
• The UI and logo were identical, making it impossible for users to distinguish between authentic and fake.
In other words, the system "conferred even the ability to move instantly, even after trusting the app."
When the integrity of a travel app is compromised, the damage extends beyond simple information leaks and can lead to various consequences.
✔ Invalidity of airline tickets
✔ Schedule disruption
✔ Additional costs
How did we defend ourselves? - The role of LIAPP
In this case, the key defense was LIAPP.
LIAPP – Travel App Forgery and Modification Detection
•App signature, code, and resource integrity checks
•Immediately detects execution of apps different from those distributed by default
•Blocks execution of repackaged and counterfeit apps
•Disables the display of forged boarding passes
LIAPP verifies whether the app is a genuine travel app at launch time, preventing boarding passes from being opened in the forged app.
Movement permissions are restricted to the legitimate app and the normal execution environment.
What has changed since implementation?
The changes were clear after the security implementation.
•Blocked attempts to view boarding passes from counterfeit and forged apps
•Canceled boarding pass theft incidents
•Plummeted complaints related to check-in and seat changes
•Restored customer trust and reduced customer support costs
An operations team representative stated,
“Flight ticket issues are a particularly emotional area for customers. Since the security implementation, boarding pass-related claims have decreased significantly.”
For travel apps, security has directly translated into operational stability and brand trust.
Final Lesson
In travel apps, airline tickets, train tickets, and boarding passes are not data, but "permissions."
•If the app is tampered with,
•the boarding pass is exposed,
•and movement itself becomes impossible.
Therefore, the starting point for travel app security isn't functionality, but rather determining, "Is this app authentic?"
LIAPP is the last line of defense, protecting the most crucial mobility permissions in travel apps.
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