Important: Your current Windows version is outdated and no longer supported.
For your security, we recommend switching to Windows 10 before downloading Avira software.
Update your Windows version here.
Wichtig: Ihre Windows-Version ist veraltet und wird nicht mehr unterstützt.
Zu Ihrer Sicherheit empfehlen wir Ihnen den Wechsel zu Windows 10 vor dem Download unserer Software.
Hier können Sie Ihr Windows aktualisieren.

Avira Free Security

Say goodbye to scammers, hackers and slow devices with just one click

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"Avira plugs the holes Windows Defender often leaves open"




Take our product tour

Click the icons on the left and center to learn more about Avira Free Security's features and benefits


All good things come in three's

Free Security takes a three-pronged approach to protecting and enhancing your digital world.

All the protection you need, whenever you need it

Threat protection has evolved to better suit your digital lifestyle. That’s why we packed Free Security with a diverse spectrum of features.  It safeguards you, your data, and devices from all types of threats (including the vulnerabilities lurking in your own machine, like weak passwords or outdated software). 

So, you can bank, shop, game, browse… you’re free to do whatever you like, and do it safely.


Anonymous in everything you do


Surveillance has become a part of everyday life so it’s time to take back control of your data. Every trace you leave online, what you buy, where you are, what you search for, which passwords you use—you’re being tracked by third parties. 

Avira keeps it private and for your eyes only by making you invisible online. 


Make your devices feel like new again

A…slow…device…that…keeps crashing and a battery that fails on you? That’s frustrating. It also makes you less efficient. That’s why Avira Free Security comes with built-in performance optimizers. They accelerate boot times, extend battery life, and rid your system of junk. 

The result? A clean, stable device with more space for all the things you love, like photos.


Billions of reasons to get more than antivirus.

Click on the pie chart to learn more about each threat.

Threat landscape
Pie Chart with 7 slices
  • $11.5 billion

    global damage costs due to ransomware

    Ransomware takes your PC hostage and denies you access to your data unless a ransom is paid. Avira Free Security comes with a built-in, powerful anti-ransomware.

  • 350,000

    new malicious programs every day

    Viruses, trojans, worms, and co. are flooding the internet. Avira Free Security includes a multi-award-winning antivirus that keeps threats well away from your PC.

  • 2.2 billion

    stolen passwords & email addresses

    These were leaked online last year in the infamous Collection #1-#5 data breaches. Avira Free Security generates unhackable passwords for all your online accounts, protecting you against the financial consequences of identity theft.

  • 2.2 million

    routers with security vulnerabilities

    In 2019, security vulnerabilities were discovered in millions of routers. These “doorways” allow hackers to enter private networks and intercept confidential data. Avira Free Security scans your home network for vulnerabilities.

  • 5,000

    annoying popups seen daily

    Every day we’re bombarded with ads online. Avira Free Security blocks annoying ads—and shields you from third parties trying to track your internet activities.

  • 1.5 million

    new phishing sites every month

    Phishing is an attack used to gain access to your credit cards and bank accounts. Avira Free Security blocks 25 million malicious sites and 8 million phishing attempts every month.

  • 89 million

    Windows PCs with outdated software

    Around 163 million devices participated in data collection—55% were running outdated software. Old software comes with security vulnerabilities that are easily exploited by hackers. Avira Free Security helps keep your software securely up to date.

Privacy by design: We don't sell your data.

Unlike most security vendors, Avira doesn't sell your data and never will. Nor do we share your data with 3rd parties such as government, Big Tech or advertising networks.

Award-winning tech relied on by 500 million users and Fortune 500 companies.

Customers love us. Cyber attackers and privacy violators, not so much.

4.5/5 - Excellent

18,000+ reviews
Want even more?

Discover our premium solutions.

Avira Internet Security for Windows

The premium security bundle

Avira Prime. For all your devices.

The all-in-one security, privacy, and performance bundle

Annual subscription / 1 PC

  • Premium device and identity protection
  • Alerts you if your data was leaked in a security breach
  • Automatic software and driver updates


Annual subscription / 5 devices

  • Everything in Internet Security Suite
  • + Unlimited VPN
  • 30 tune-up tools
  • Premium mobile apps for Android & iOS
  • VIP customer support

System requirements

Your device is compatible


Windows 7 and later

Secure your digital life with one smart click