Security
Learn Application Security
Application security is the practice of building software that protects the data it holds and resists misuse, starting from how you write the code.
Why teams use it
- Most serious breaches trace back to ordinary application mistakes, not exotic attacks.
- Fixing a design flaw after launch costs far more than avoiding it.
- Handling personal data carries legal obligations.
Where you will meet it
Using parameterised queries instead of building SQL by string concatenation removes an entire category of vulnerability.
What to learn, and in what order
Work through these roughly in order. Jumping to the advanced list before the basics are solid is the most common way people get stuck.
Beginner
- Authentication versus authorization
- Password storage done properly
- Why HTTPS matters
- Never trusting input
Intermediate
- Tokens and OAuth concepts
- Injection and how parameterisation prevents it
- Cross-site scripting and output encoding
- Managing secrets and configuration
Advanced
- Threat modelling
- Dependency vulnerability management
- Security logging and monitoring
- Secure deployment practices
Have a project worth talking through?
Tell us what you're building or what's slowing your current system down. We'll give you a direct read on scope and approach.