Security terms

1 term of 1444 total

🔒 Defending code from the threats that never sleep

Security vulnerabilities do not announce themselves — they wait quietly in code that looks perfectly fine on the surface. This category covers attack vectors, defensive techniques, secure coding practices, and the mental models that help you think like an attacker before one finds you. From SQL injection and XSS to authentication flaws and cryptographic pitfalls, understanding these terms is not optional — it is professional responsibility.

Sort A → Z Recently Added Recently Updated Difficulty Most Viewed Most Rated Most Shared

Level All Beginner Intermediate Advanced

✕ Clear A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Variable Variables ($$var) Risks PHP 3.0+

$$var creates a variable whose name is the value of $var — using it with user input allows arbitrary variable access/creation and is effectively a backdoor.

2mo ago security advanced