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Microsoft Reveals 65,000 Companies’ Data Breach

In response to a security breach that left an endpoint freely available over the internet without any authentication, Microsoft this week acknowledged that it unintentionally exposed data related to customers.

The IT giant was contacted on September 24, 2022, when the cybersecurity intelligence company SOCRadar identified the data leak.

2.4 TB of privileged data, such as names, phone numbers, email addresses, company names, and connected files containing information like proof-of-concept documents, sales data, and product orders, may have been exposed due to a compromised Azure Blob Storage, according to SOCRadar, which claims to have informed Microsoft upon its findings.

Microsoft highlighted that there was no security flaw to blame for the B2B leak, which was “generated by an unintended misconfiguration on an endpoint that is not used across the Microsoft ecosystem.” However, Microsoft has contested the scope of the problem, claiming that the information in question included names, email addresses, email content, company names, contact numbers, and attached files pertaining to transactions between such a user and Microsoft or an authorized Microsoft partner.

Organizations can find out if their data were exposed thanks to a website called BlueBleed that SOCRadata set up. “According to our study, the leak, known as BlueBleed Part I, contains crucial data that belongs to more than 65,000 companies from 111 countries. So far, the leaks have exposed 548,000 individuals, 133,000 projects, and more than 335,000 emails,” as per the SOCRadar researchers.

Additionally, Redmond highlighted its dissatisfaction with SOCRadar’s choice to make a public search function available, claiming that doing so exposes users to unnecessarily high-security risks.

In a follow-up post published on Thursday, SOCRadar compared the BlueBleed search engine to the ‘Have I Been Pwned’ data breach notification tool, presenting it as a way for businesses to determine whether their data had been compromised in a cloud data leak.

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