In 2024, a well-known enterprise website was hacked, and a mining page popped up when users visited. In 2025, an e-commerce platform was attacked by SQL injection, resulting in customer data leakage.
Corporate websites being attacked is no longer news. As a developer or operations personnel, security protection must be in place.
Today from the code layer, configuration layer, and operation and maintenance layer, let's talk about the security protection of enterprise websites.
SQL injection attack
What is SQL injection
SQL injection is one of the most common web attacks. Attackers insert malicious SQL code into user input to make the database perform unintended operations.
For example, a login form:
<form>
用户名：<input name="username">
密码：<input name="password">
</form>
Backend code if handled like this:
// 不安全！
$sql = "SELECT * FROM users WHERE username='" + username + "' AND password='" + password + "'";
Attacker inputusername: admin' --, SQL becomes:
`sql
SELECT * FROM use