- Security
- Privacy
- Performance
Download Avast One and run a free spyware scan to protect against spyware and other online threats. Regain control of your privacy with a spyware scanner, detector, and remover that’s ultra-fast and refreshingly lightweight — and 100% free.
Powerful spyware scanner
Shop and bank securely
Trusted by over 400 million users
Award-winning protection
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Run a free spyware scan — powered by Avast's industry-leading antivirus detection — and remove spyware and block malicious downloads before they can do harm. Get the world’s largest threat-detection network and machine-learning spyware protection in a single, lightweight spyware scan and removal tool — 100% free.
Removes existing spyware and updates in real time to defend against new and emerging threats.
Prevents untrusted apps and potential spyware from accessing your webcam without consent.
Keeps your device clean by isolating potential spyware and other malware from the rest of your system.
Finds and isolates spyware before your operating system inadvertently loads malicious files.
Alerts you immediately if any malicious apps or files are detected on your device, and blocks them.
Prevents malicious scripts from loading while you browse online, and blocks dangerous websites.
Removes existing spyware and updates in real time to defend against new and emerging threats.
Prevents untrusted apps and potential spyware from accessing your webcam without consent.
Keeps your device clean by isolating potential spyware and other malware from the rest of your system.
Finds and isolates spyware before your operating system inadvertently loads malicious files.
Alerts you immediately if any malicious apps or files are detected on your device, and blocks them.
Prevents malicious scripts from loading while you browse online, and blocks dangerous websites.
Our top-ranked antivirus engine that powers Avast One has been winning prestigious awards for years. Independent security test labs and experts agree: Avast’s cybersecurity protection is among the best in the world.
Avast One was awarded five stars from TechRadar and won the coveted 2021 Editors’ Choice award from PCMag. Our trophy case is full of awards from industry-respected sources, including:
AV-TEST: Top Product, AV Test Certified, 2022
PC Mag: Editors’ Choice, 2021
TechRadar: 5 stars, 2021
AV Comparatives: Top Rated Product Award, 2020
But don't just take our word for it.
The UI for your software - amazing. Great work over the years. Can't say enough good things!
Thank you, Avast, for the excellent work you do. I run your antivirus software on both my Mac OS X and my Windows machines. You have the best products on the market, period.
I’ve been using Avast for over a year and have found it one of the best free software protection devices on market.
Protect all your devices against spyware and other malware. Get ironclad online security for your Mac, Android, and iOS device.
Phones also need spyware protection. Avast’s Android security software defends your phone from spyware, malicious apps, and other threats. Secure your Wi-Fi network and keep your data where it belongs — right in the palm of your hand.
We’re not demanding. All you need is a PC with Windows 11, 10, 8.1, 8 or 7*, 1 GB RAM
and 2 GB of hard disk space. And that’s it.
* Both the 32- and 64-bit versions, excluding Starter and RT editions.
Windows 10 compatible
