Paragon Initiative Enterprises Blog

The latest information from the team that develops cryptographically secure PHP software.

Securely Implementing (De)Serialization in PHP

Deserializing a string into a data structure is a simple task riddled with security holes.


On The Design and Implementation of a Stealth Backdoor for Web Applications

Or: How I won the password hashing category for the Underhanded Crypto Contest at DEFCON 23.


On Estimating the Impact of a Software Vulnerability

What is the potential impact of a given vulnerability? This isn't easy to answer.


Everything You Need to Know About Preventing Cross-Site Scripting Vulnerabilities in PHP

Although Cross-Site Scripting is one of the most common vulnerabilities on the Internet, it remains an unsolved problem (unlike SQL Injection).


Preventing SQL Injection in PHP Applications - the Easy and Definitive Guide

It's 2015; there's no excuse for writing code vulnerable to SQL Injection any more


The Fast Track to Safe and Secure PHP Sessions

How to configure and use PHP's build-in session management system for maximum security.


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Our team of technology consultants have extensive knowledge and experience with application security and web/application development.

We specialize in cryptography and secure PHP development.

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Our Security Newsletters

Want the latest from Paragon Initiative Enterprises delivered straight to your inbox? We have two newsletters to choose from.

The first mails quarterly and often showcases our behind-the-scenes projects.

The other is unscheduled and gives you a direct feed into the findings of our open source security research initiatives.

Quarterly Newsletter   Security Announcements