They got in by cracking the security on a high-end electronic key-card system
The hack: Researchers at F-Secure, a Finnish cybersecurity company, breached the defenses of a hotel lock system known as Vision by Vingcard last year by combining a card reader that can be bought online for a few hundred euros with custom software. Using old cards from hotels, they generated a master key that gave them access to all the rooms using the lock.
Don’t panic: After they discovered the security flaws, the researchers alerted Assa Abloy, the lock’s Swedish manufacturer, and worked with it to develop a software fix, which was issued earlier this year.
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