Sql injection, DOT NET Programming

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What is SQl injection?

This is a Form of attack on the  database-driven Web site in which the attacker executes the unauthorized SQL commands by taking merits of insecure code on a system connected to the Internet, or bypassing the firewall. The SQL injection attacks are always used to steal the information from a database from which the data would normally not be available and/or to gain access to an organization's host computers through the computer which is hosting the database.

The SQL injection attacks typically are simple to avoid by ensuring that a system has strong input validation.

As the name suggest we inject SQL which can be relatively dangerous for the database.

For Example this is a simple SQL

SELECT email, passwd, login_id, full_name

 FROM members

WHERE email = 'x'

Now someone does not put "x" as the input but puts "x ; DROP TABLE members;". So the actual SQL which will execute is :-

SELECT email, passwd, login_id, full_name

 FROM members

 WHERE email = 'x' ; DROP TABLE members;


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