Structured data refers to information that is organized in a clearly defined format, such as rows and columns in spreadsheets or fields in databases. This organization makes it easy for computers and people to search, sort, and analyze the data efficiently. Because of its predictable structure, structured data is commonly used for storing financial records, customer information, and other business data. However, this same predictability can make structured data a target for cyberattacks, as sensitive information can be easily extracted or misused if security measures are weak.