: Always ensure you have explicit written authorization before using such tools on any system you do not own.
For example, consider a simple login form that asks for a username and password. A normal SQL query to authenticate a user might look like this: Download havij sql injection
Penalties range from heavy fines to imprisonment. In 2019, a 19-year-old was sentenced to 27 months in federal prison for using SQL injection—likely with Havij or a similar tool—to steal data from a university. : Always ensure you have explicit written authorization