What is Windows DLL Hijacking? How to Protect Your PC

Keelan Balderson

Are you tired of malware and security threats lurking around your Windows system? Have you heard of Windows DLL Hijacking but aren’t sure what it means? This guide will break down what Windows DLL Hijacking is, why it’s a security risk, and steps to protect your computer.

Table of Contents

  1. Understanding Windows DLL Hijacking
  2. Why is Windows DLL Hijacking Dangerous?
  3. Signs You’ve Been Affected
  4. Steps to Protect Your Computer
  5. Further Measures to Secure Your PC

Understanding Windows DLL Hijacking

Before we jump into the specifics, let’s talk about what DLL files actually are. DLL stands for Dynamic-Link Library, and these files are crucial for many programs on your Windows PC. They contain instructions that other programs use to perform certain actions. Hijacking these files can lead to serious security risks.

→ To check the DLL files on your computer:

  1. Open the File Explorer by pressing Windows key + E.
  2. Type %SystemRoot%\System32 in the address bar and press Enter.
  3. Look for files with a .dll extension.

To better understand how these work and where they are stored, read Where Are DLL Files Stored?.

What is Windows DLL Hijacking?

DLL Hijacking is a type of cyberattack that replaces or alters original DLL files with malicious copies. These attacks usually aim to get unauthorized access or steal sensitive data from your computer.

Why it’s a big deal:

  1. It can give hackers control over your computer.
  2. Personal data like passwords and banking details can be stolen.
  3. Your system could be damaged, needing repair tools.

To know how to fix or prevent such issues, consider reading about Best PC Tune-Up Tools.

What are the signs that you’ve been affected by hijacking?

It’s not always easy to spot the signs, but you might be a victim if you’re experiencing odd system behavior like crashes or slow performance.

How to check:

1. Open Task Manager by pressing Ctrl + Shift + Esc.startup-tab-task-manager

2. Look for unfamiliar processes running in the background.

3. Use a reliable antivirus to perform a full system scan.

Find more about warning signs and how to fix them in our Windows Errors Repair Tools Guide.

Steps to Protect Your Computer

To safeguard your system against DLL Hijacking, here’s what you need to do:

  1. Keep your software updated, especially your operating system and antivirus.
  2. Download files and software only from trusted sources.
  3. Run regular system scans with a reliable antivirus tool.

For further information on why updates are crucial, read about the Pros and Cons of Always Updating Windows.

Further Measures to Secure Your PC

Beyond the basic steps, there are additional actions to make your computer more secure:

  • Use firewalls and consider a VPN for extra protection.
  • Periodically change your passwords.
  • Backup your data regularly.

For in-depth tips, check our Best Fixers for Blue Screen of Death to understand how to keep your system healthy.


Following these tips and being vigilant can significantly reduce the risk of falling victim to Windows DLL Hijacking. Equip your PC with the right tools and knowledge so you’re less likely to face security issues.

For a full list of tools and guides that can help you, look at Best DLL Fixer Tools and Best Registry Fixer.

This Article Covers:
Was this article helpful?
About the author
Keelan Balderson
About the author | Keelan Balderson
Keelan is a trained journalist from the UK with a passion for all things tech and security. He likes to dig into the latest tools and software to see what really works, so others can make an informed choice.

These also might be interesting for you

How to Fix the ‘Iphlpapi.dll Missing’ Error in No Time
Where Does Windows Look For DLLs? [DLL Files Location]
DLL Not A Valid Win32 Application [8 Easy Fixes]