SQL Injection Principles

SQL Injection is a code injection attack that targets the SQL database used by web applications. Attackers exploit vulnerabilities in input validation to manipulate database queries, potentially gaining unauthorized access to sensitive data or altering database contents.

⚠️ Risks of SQL Injection

  • Data theft: Stealing user credentials, personal information, or financial records
  • Data tampering: Modifying or deleting critical database entries
  • Privilege escalation: Gaining administrative access to the database
  • Denial of Service (DoS): Overloading the database with malicious queries

💻 Attack Principles

  1. Input manipulation: Injecting malicious SQL code into input fields (e.g., login forms, search bars)
    SQL_Injection_Attack
  2. Exploiting injection points: Using parameters like WHERE, ORDER BY, or UNION to alter query logic
  3. Executing malicious code: Combining injected code with legitimate queries to bypass security measures

🔒 Defense Strategies

  • Use parameterized queries (prepared statements)
  • Input validation and sanitization
  • Least privilege principle for database users
  • Regular security audits and vulnerability scanning

For deeper insights, learn how to prevent SQL injection attacks.

Database_Security