Microsoft says it has warned thousands of its cloud computing clients of a recently discovered flaw that left their data vulnerable for an extended period. The problem involved keys used to access Microsoft Azure’s flagship database service Cosmos DB, and was discovered two weeks ago by cybersecurity company Wiz. The cloud service is used to store data, as well as to analyze and process everything from orders from suppliers to transactions with consumers .According to Microsoft, customers who may have been impacted were notified, but there was no evidence the flaw had been exploited by malicious actors. What lessons are to learn from hacks during the pandemic

