Microsoft's improper use of Azure's Shared Access Signature (SAS) tokens on a public GitHub repository led to the exposure of 38TB of private data. The misuse of SAS tokens, coupled with a lack of monitoring and management, increased the risk of data breaches and made tracking difficult. The AI model training process, which heavily relies on large-scale data, requires stronger security measures and collaboration to prevent similar incidents in the future. Microsoft's data has been exposed for years, posing a significant threat to data security, including passwords, keys, and internal communications.