2021 has not been a great year for Microsoft in terms of security, it seems not a month passes by without some security problem raising its head.  This time a flaw in Microsoft’s Azure Cosmos DB database product left more than 3,300 Azure customers open to complete unrestricted access by attackers.  The vulnerability was introduced in 2019 when Microsoft added a data visualization feature called Jupyter Notebook to Cosmos DB. The feature was turned on by default for all Cosmos DBs in February 2021.

listing of Azure Cosmos DB clients includes companies like Coca Cola, Liberty Mutual Insurance, ExxonMobil, and Walgreens, to name just a few.

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