Web Development Security

A secure application is as important (or even more, depending on it’s type) as a well-written one. Unfortunately, not so many developers are concerned about that topic. Overall, following some simple rules can improve a lot the security of applications.

Here I will focus on PHP examples, but the concept may be adapted to other languages.

Since HTTP requests can be manipulated client-side, all user input must be validated.

When a user-supplied script is stored and/or executed by the application.

Assuming that an application allows input via GET method, a malicious attacker do this injection:

A report is created when related warnings are generated by the application.

Caused by viruses, scam/phishing, malicious site/redirect

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