If you copied any of these popular StackOverflow encryption code snippets, then you coded it wrong

So, You Want to Learn to Break Ciphers

Understanding Certificate Pinning

Don’t underestimate GREP based code scanning

Protecting User Accounts When Usability Matters

Demonstrating Reflected versus DOM Based XSS

A Review of PentesterLab

Learning to break ciphers

Top 10 Developer Crypto Mistakes

Cautionary note: UUIDs generally do not meet security requirements