What should be used to defend against SQL injection?

What should be used to defend against SQL injection?

You should always use parameterized statements where available, they are your number one protection against SQL injection. You can see more examples of parameterized statements in various languages in the code samples below.

What control provides the best protection against both SQL injection and cross-site scripting attacks?

WAFs provide efficient protection from a number of malicious security attacks such as: SQL injection. Cross-site scripting (XSS) Session hijacking.

What is the best defense against a structured query language injection attack?

The best defense against such an attack is to have strict edits on what can be typed into a data input field so that programming commands will be rejected.

Which is symbols can I whitelist to remain safe against SQL?

This is what I came up with (I will whitelist only these characters): Alphanumeric Space I would like to check if this is “safe” enough with regards to XSS injection, SQL injection and eventually any other things I did not think about. P.S.

Which is better blacklisting or whitelisting characters to prevent XSS?

Also, why is whitelist approach better than blacklist approach as mentioned by OWASP. Why not just block a handfull of characters used in XSS like < , > , etc Blacklists are static in the sense, they prevent ‘known bad’ from happening.

Is there a way to protect against SQL injection?

Using parameterized queries is considered the only proper way to protect from SQL injections, for the reasons provided in the original answer below: There are no such characters. It is not “characters” that cause the SQL injections.

Can a validation check function as a whitelist?

Validation checks should function as whitelist. With proper escaping (see point 3 below) this shouldn’t be needed for security, but it may block an undiscovered attack in the future. Be careful though, it’s often harder than it seems.