Security Best Practices You Must Never Forget While Developing PHP Applications

When it comes to developing web apps, it is the programmer’s chief responsibility to ensure that the app is protected from every type of attack that threatens its security. It is imperative that developers must make every effort to make sure that the app doesn’t suffer from security-related flaws and is not vulnerable to attacks. While security remains the developer’s responsibility primarily, it is also equally important to choose a resource that will contribute to that goal.

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To that end, PHP serves as an excellent solution. Considering the popularity of PHP for developing web apps, we decided to put together a handy list that lists the most crucial tips for it. Follow these PHP security best practices to help improve the safety of your web app’s code.

  1. Parameterized queries: Among the most common type of attack, an SQL injection attack involves a malicious entity attempting to change the data flowing through consultations. The ideal way to prevent such attacks is to add neither nor link SQL strings with external data. Instead, developers should make use of prepared statements and parameterized queries. You can use these two options with vendor-specific libraries. The other option is to use PDO.

  2. Don’t forget to filter and validate data: No matter the source of the data, be it a server environment, GET and POST, configuration file, and more, it would be foolish to trust it blindly. It is of critical importance to filter as well as validate all data. You can do that by utilizing one of the libraries.

  3. Updated SSL/TLS configurations: Developers who wish to secure their web app must always make sure that the server’s SSL/TLS configuration is not only updated but also appropriately set up. Besides that, one must also scan it regularly to ensure that it doesn’t use outdated versions of TLS, weak ciphers. Oh, and before we forget, also see that the security certificates are valid and don’t have substandard keys.

  4. Note down EVERYTHING: It doesn’t matter if you are making a note of password resets, debugging information, or unsuccessful login attempts, developers must never forget to log everything. In addition to that, it must be done with a practical and straightforward package, like Monolog.

  5. Don’t blacklist: Instead of trying to weed out invalid input, developers should add filters for just valid information. Why? Well, because blacklisting means the data has to be evaluated to see if it contains invalid data. Whitelisting, on the other hand, examines the contribution to see if it indeed comprises competent data. Whitelisting is preferred over blacklisting since it generates a validation procedure that only qualifies expected data.

Ensuring the security of your custom PHP development project can admittedly seem like a daunting task. However, if you make an effort to adopt these best practices, you will be easily able to tend to any loopholes and flaws that might exist in your web app’s code and safeguard it from all sorts of mischievous and destructive attacks.

This UrIoTNews article is syndicated fromDzone