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PHP Tutorials — Security

PHP » Security — almost 11 years ago
A cryptographic hash function is a procedure that takes in a variable amount of data and returns a fixed-size bit string known as the data' signature or hash value.Among the hash functions the most widely used is by far MD5, but currently it's days are numbered because of breakthroughs in cracking it.
PHP » Security — about 11 years ago
Wouldn't it be nice to add a "Login With Google" ability to your web application? This tutorial goes over the basics of Single Sign-On with OpenID and Google's implementation of it.
PHP » Security — about 11 years ago
It’s very important to secure your data in PHP correctly. Because if you don’t, your website is in risk of being harmed by SQL injections and other dangerous code injections, which you obviously don’t want. So to protect your website against these code attacks, this tutorial was written ;)
PHP » Security — over 11 years ago
An introductory guide to breaking CAPTCHA's with source code. Walks through identifying weaknesses in a CAPTCHA using them to extract the text and then identifying them.
PHP » Security — over 11 years ago
XOR Encryption is a simple symmetric cipher in use in many applications where security is not a defined requirement. Exclusive-OR ( XOR ) encryption is almost unbreakable through brute force methods, although it is susceptible to patterns, it requires that both encryptor and decryptor have access to the encryption key, but the encryption algorithm although very simple is nearly unbreakable.
PHP » Security — over 11 years ago
Spidering, in its simplest form is the act of transferring data from one database to another. Spidering requires the use of Regular Expressions, the cURL library (if POST data or cookies are used), and the cron libraries (if we need to download information with a schedule).
PHP » Security — over 11 years ago
One crucial part of PHP development practice is always keeping in mind that security is not something you can simply buy off the shelf at your local convenient store. Ensuring the security of your web applications is a process, which over time, needs to be constantly evaluated, monitored, and hardened.
PHP » Security — over 11 years ago
Data security is important and often undervalued by designers, developers, and clients alike. Since PHP 5.2.0, data sanitization and validation has been made significantly easier with the introduction of data filtering. Today, we're going to take a closer look at these filters, how to use them, and build a few custom functions.
PHP » Security — over 11 years ago
In this article i will cover 5 important steps you need to take to make sure your web site’s secure.
PHP » Security — over 11 years ago
This tutorial discusses methods to combat spam bot attacks and keep your site clean and safe.
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