API Security
5 min read Quiz at the end
HTTPS, input validation, parameterized queries, security headers — defend against OWASP API Top 10.
API Security Best Practices
# 1. Always HTTPS
Strict-Transport-Security: max-age=31536000
# 2. Input validation
from pydantic import BaseModel, validator
class CreateUser(BaseModel):
email: str
age: int
@validator("age")
def valid_age(cls,v):
if not 0<=v<=120: raise ValueError("Invalid age")
return v
# 3. Parameterized queries
cursor.execute("SELECT * FROM users WHERE email=%s",(email,))
# 4. Security headers
X-Content-Type-Options: nosniff
X-Frame-Options: DENY
# OWASP API Top 10:
# Broken Object Level Auth, Missing Rate Limits, Injection
Topic Quiz · 1 questions
Test your understanding before moving on
1. What security risk does input validation prevent?
💡 Validating and sanitising all inputs prevents injection attacks where malicious data executes code.