Gunadarma Database Security Study Guide, Study Guides, Projects, Research of Database Management Systems (DBMS)

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Database Security

Database System

Informatics Engineering

Gunadarma University

Introduction to Database Security: Database security encompasses measures and practices implemented to protect databases against unauthorized access, data breaches, and malicious activities. It involves implementing various security controls, authentication mechanisms, and encryption techniques to safeguard sensitive data stored in databases. Key Concepts in Database Security:

1. Access Control: o User Authentication: Verify the identity of users accessing the database using credentials such as usernames and passwords. o Authorization: Grant appropriate permissions to users or roles to access specific database objects (tables, views, procedures) based on their roles and responsibilities. o Role-Based Access Control (RBAC): Assign users to roles, and grant permissions to roles rather than individual users, simplifying access management.
2. Data Encryption: o Data-at-Rest Encryption: Encrypt sensitive data stored in the database files to protect it from unauthorized access in case of physical theft or unauthorized access to storage media. o Data-in-Transit Encryption: Encrypt data transmitted between the database server and client applications to prevent interception and eavesdropping.
3. Auditing and Logging: o Database Auditing: Monitor and record database activities, including logins, access attempts, data modifications, and schema changes, to detect and investigate security incidents. o Logging: Maintain audit logs in a secure location, and regularly review logs to identify suspicious activities or potential security threats.

4. Data Masking and Redaction Example: o Apply data redaction to hide sensitive information in query results: Best Practices:

• Least Privilege Principle: Grant users the minimum permissions necessary to perform their tasks to limit the impact of security breaches.
• Regular Security Audits: Conduct periodic security audits and vulnerability assessments to identify and address potential security weaknesses.
• Data Classification: Classify data based on sensitivity and apply appropriate security controls and protection mechanisms accordingly.
• Employee Training: Educate database administrators and users about security best practices, password hygiene, and social engineering risks to mitigate human-related security threats.

Conclusion: Database security is crucial for protecting sensitive data from unauthorized access, ensuring data privacy, and maintaining regulatory compliance. By implementing robust security measures, such as access control, encryption, auditing, and data masking, organizations can safeguard their databases against security threats and mitigate risks effectively. Practice implementing database security controls and regularly review security policies and procedures to ensure continuous protection of critical data assets.