Microsoft secures backend server that leaked Bing data

guest · Sep 21, 2020

Microsoft secures backend server that leaked Bing data
No personal user data was leaked in the incident
September 21, 2020
https://www.zdnet.com/article/microsoft-secures-backend-server-that-leaked-bing-data/

Microsoft has suffered a rare cyber-security lapse earlier this month when the company's IT staff accidentally left one of Bing's backend servers exposed online.

The server was discovered by Ata Hakcil, a security researcher at WizCase, who exclusively shared his findings with ZDNet last week.
According to Hakcil's investigation, the server is believed to have exposed more than 6.5 TB of log files containing 13 billion records originating from the Bing search engine.
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Hakcil said the server was exposed online from September 10 to September 16, when he notified the Microsoft Security Response Center (MSRC), and the server was secured again with a password.

"We've fixed a misconfiguration that caused a small amount of search query data to be exposed," a Microsoft spokesperson told ZDNet in an email last week.
The leaky server was identified as an Elasticsearch system. Elasticsearch servers are high-grade systems where companies aggregate large quantities of data to easily search and filter through billions of records.
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WizCase: Data Leak: Unsecured Server Exposed Bing Mobile App Data

The WizCase online security team, led by white hat hacker Ata Hakcil, uncovered a massive data leak in a server owned by Microsoft logging data related to its Bing mobile app, available in both Google Play and App Store.
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Microsoft secures backend server that leaked Bing data

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