What is SQL injection?
SQL injection is a web security vulnerability that allows an
attacker to interfere with the queries that an application makes to its
database. It generally allows an attacker to view data that they are not
normally able to retrieve. This might include data belonging to other users, or
any other data that the application itself is able to access. In many cases, an
attacker can modify or delete this data, causing persistent changes to the
application's content or behavior.
In some situations, an attacker can escalate an SQL injection
attack to compromise the underlying server or other back-end infrastructure, or
perform a denial-of-service attack.
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