Passwords Evolved: Authentication Guidance for the Modern Era by Troy Hunt [source]
How to do modern password authentication.
Pathway Exploratory Testing by Marcel Gehlen [source]
I adore this post. Collection of blog posts links organized as a pathway to exploratory testing.
Ethical hacking with WebGoat by Michał Dymek [source]
Learn to hack against an intentionally vulnerable web application.
RESTFUL-BOOKER: YOUR ONE-STOP API TESTING DEMO by Mark Winteringham [source]
In order to learn API framework testing, you need a rest API app. Mark created one for you.
Session-Based Testing in an Agile environment by Simon ‘Peter’ Schrijver [source]
Simon is context-driven testing junky, just like me. Read how Simon tests in a two-week sprint.
Move Your Bugs to the Left [source]
An excellent example of code quality practices.