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CloudDefense.AI Discovered Major Data Breach of Falkensteiner, Thousands of Customers’ Data Exposed

Companies entrusted with customer information are under constant threat from cybercriminals looking to exploit vulnerabilities. Unfortunately, Falkensteiner, a well-known hospitality provider, recently fell victim to a major data breach. This breach exposed the personal information of thousands of customers. In this article, we will delve into the details of this incident, its implications, and the role played by CloudDefense.AI in uncovering the breach.

Falkensteiner: A Trusted Name in Hospitality

Falkensteiner, a renowned hospitality provider with a strong global presence, is known for its luxurious resorts and impeccable service. However, the breach has shaken its reputation and raised questions about the security of customer data.

The Falkensteiner Data Breach: Unveiling the Details

The Breach Uncovered

CloudDefense.AI has recently got featured on SecurityWeek for discovering a significant data breach affecting thousands of customers of the European hotel chain, Falkensteiner. The hotel chain is based in Austria and operates across Central and Eastern Europe, including properties in Italy, Croatia, Slovakia, Serbia, and the Czech Republic.

The Exposed Data

Anurag Sen, found an unprotected server storing personal information of Falkensteiner customers. Sen’s analysis showed that the exposed data was associated with Gustaffo, an IT solutions provider for the hospitality industry. Sen notified both Gustaffo and Falkensteiner about the breach, but unfortunately, none of them responded. However, after his notification, the server was secured.

CloudDefense.AI Discovered Major Data Breach of Falkensteiner, Thousands of Customers' Data Exposed

According to Anurag Sen’s analysis, the vulnerable Elasticsearch server contained over 11 Gb of data before it was taken offline. Sen found over 102,000 records, including full names, phone numbers, email addresses, and booking details, in the exposed database.

Silence of Falkensteiner and Gustaffo

Despite Anurag Sen’s notification, Gustaffo claims that they secured the server after learning about the leak from a different researcher. Gustaffo stated that the incident was limited to one system and that the details of only approximately 13,000 individuals were exposed. Gustaffo representatives explained that many of the records were likely duplicates since they do not store the information of more than 13,000 customers in the database. The company has performed the necessary security updates to its system and is in touch with government authorities handling the incident.

Unsettling Aftermath

Anurag Sen is unhappy with the way the issue has been handled by both Falkensteiner and Gustaffo. He states that neither company responded to his emails, and customers have not been notified about the breach. It is unclear whether Falkensteiner or Gustaffo will inform customers about the incident or if they will face any regulatory action as a result of the breach.

Broader Implications

This incident highlights the importance of companies taking data privacy seriously and having robust security measures in place to protect sensitive customer information. It is also crucial for companies to have responsible disclosure programs in place so that researchers can report vulnerabilities without fear of retaliation. Customers have a right to know if their personal information has been compromised so that they can take steps to protect themselves from potential fraud or identity theft.


The Falkensteiner data breach serves as a stark reminder of the persistent threat of cybercrime. Companies must remain vigilant and proactive in protecting their data and the trust of their customers. CloudDefense.AI’s swift action in uncovering the breach highlights the need for advanced cybersecurity measures in today’s digital landscape.

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Abhishek Arora
Abhishek Arora
Abhishek Arora, a co-founder and Chief Operating Officer at CloudDefense.AI, is a serial entrepreneur and investor. With a background in Computer Science, Agile Software Development, and Agile Product Development, Abhishek has been a driving force behind CloudDefense.AI’s mission to rapidly identify and mitigate critical risks in Applications and Infrastructure as Code.
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