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Top 5 Web Vulnerabilities Hackers Love to Exploit – And How to Prevent Them
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Web applications are the backbone of digital business, but they’re also prime targets for attackers. In this post, we break down the top 5 vulnerabilities hackers commonly exploit and how you can protect your apps before it’s too late.

Top 5 Web Vulnerabilities:

1. SQL Injection (SQLi)

  • What it is:
  • Malicious SQL code inserted into input fields to manipulate the backend database.

  • Why it’s dangerous:
  • Can lead to unauthorized data access, deletion, or even complete server takeover.

  • How to prevent it:
  • Use parameterized queries, ORM libraries, and input validation.

2. Cross-Site Scripting (XSS)

  • What it is:
  • Exposing internal objects (like files or database keys) without proper access checks.

  • Impact:
  • Can steal user cookies, session tokens, or redirect users to malicious sites.

  • Prevention:
  • Sanitize user inputs and implement a strong Content Security Policy (CSP).

3. Broken Authentication

  • What it is:
  • Flaws that let attackers bypass authentication mechanisms.

  • Real-world risks:
  • Account hijacking, privilege escalation.

  • Fix it by:
  • Enforcing multi-factor authentication (MFA), securing session tokens, and limiting login attempts.

4. Insecure Direct Object References (IDOR)

  • Definition:
  • Exposing internal objects (like files or database keys) without proper access checks.

  • Example:
  • A user changing a URL parameter to access another user’s private data.

  • Prevention:
  • Implement access control checks and avoid exposing internal IDs in URLs.

5. Security Misconfiguration

  • Explanation:
  • Using default settings, revealing stack traces, or exposing admin panels.

  • Attack surface:
  • Vast affects servers, databases, frameworks, etc

  • Secure it:
  • Regularly audit configurations and remove unused services or features.

How VWrap Scanner Helps?

Our automated vulnerability scanner checks for all these common weaknesses and more. With frequent scans and real-time alerts, VWrap Scanner ensures you’re always one step ahead of attackers.

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