Which type of attack involves inserting malicious SQL queries into an entry field?

The type of attack that involves inserting malicious SQL queries into an entry field is known as SQL injection. This attack exploits vulnerabilities in an application's software by manipulating SQL queries that are executed by the database. When a user inputs data into a form, if the application does not properly validate or sanitize this input, an attacker can insert SQL code that alters the intended query.

For instance, instead of entering a standard username and password, an attacker might input a string that includes SQL commands that trick the database into revealing sensitive information or executing unauthorized commands. This can lead to unauthorized access to the database, data leakage, or even data manipulation.

Understanding SQL injection is crucial for security analysts as it highlights the importance of input validation and the necessity for using parameterized queries or prepared statements to mitigate this risk. By doing so, applications can ensure that user inputs are treated as data rather than executable code, thereby protecting against such injections. This specific attack vector underscores why application security is essential in safeguarding databases and sensitive information.