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What is SQL Injection?

An attack where malicious SQL code is inserted into application queries through user input to access or manipulate the database.

SQL injection occurs when user input is directly concatenated into SQL queries without sanitization. An attacker might enter ' OR 1=1 -- as a username, bypassing authentication or extracting data.

Prevention methods include parameterized queries (prepared statements), input validation, least-privilege database accounts, and ORM usage. SQL injection remains one of the OWASP Top 10 vulnerabilities and can lead to complete database compromise.

Related Terms

Content Security Policy (CSP)
An HTTP security header that controls which resources a browser is allowed to load for a web page, preventing XSS and data injection.
SOC (Security Operations Center)
A centralized team and facility responsible for monitoring, detecting, analyzing, and responding to cybersecurity threats 24/7.
Brute Force Attack
An attack method that systematically tries all possible combinations of passwords or keys until the correct one is found.
DAST (Dynamic Application Security Testing)
Testing a running application from the outside by sending malicious requests to discover security vulnerabilities.
SIEM (Security Information and Event Management)
A platform that collects, correlates, and analyzes security events from across an organization to detect threats and incidents.
Man-in-the-Middle Attack
An attack where the attacker secretly intercepts and potentially alters communication between two parties who believe they are communicating directly.
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