What Is A Sql Injection Attack? Review

Consider a simple login query: SELECT * FROM users WHERE username = 'user_input' AND password = 'password_input';

Gaining full control over the database and, in some cases, the underlying server. Prevention Strategies What is a SQL Injection Attack?

The consequences of a successful SQLi attack can be catastrophic: Consider a simple login query: SELECT * FROM

To defend against SQLi, developers should never trust user input. Key defenses include: Because '1'='1' is always true, the database may

: The most common type, where the attacker uses the same communication channel to launch the attack and gather results.

Because '1'='1' is always true, the database may bypass the password check and grant the attacker access to the first user account in the table (usually the administrator). Common Types of SQL Injection

Forcing the database to produce an error message that reveals information about its structure.