The document discusses data security and data management. It defines data security as processes and practices to protect critical IT systems and information. Effective data security uses controls, applications, and techniques to identify important data and apply appropriate security controls. Data security is important for organizations to protect user and customer data from unauthorized access. Common data security methods include access controls, authentication, backups, encryption, and data erasure. Data management techniques aim to ensure data quality, integrate data across systems, and govern data use and access. The document also discusses specific techniques for data cleansing, integration, and other aspects of data management.