[L] Web security
Web security with the most common attacks and how to protect your application. An overview of the OWASP and equal organisations.
Read & Study
Read and study the following.
Look at this videoserie with 2-minutes episodes explaining "OWASP Top 10 Vulnerabilities Explained" from Detectify.
A good article explaining different types of XSS attacks and how to prevent them.
Meet a hacker, "Detectify | Meet the Hacker - Fredrik Nordberg Almroth". A 6 minutes video where we meet a "hacker" who gives us some insight into his everyday business.
References
Use these as reference
- "OWASP Top Ten" with the latest list of the top security issues, compiled by OWASP.