Avast One Review 2026: Best Free Antivirus, With Caveats

By NorwegianSpark Editorial · Published May 31, 2026 · Updated Sep 30, 2026 · 9 min read — written with AI assistance and reviewed by the NorwegianSpark SA editorial team.

Is Avast One good in 2026? Yes. Avast Free Antivirus scored a perfect 18/18 at AV-TEST in both spring 2026 Windows 11 rounds, Avast blocked 99.3% of 400 real-world attacks at AV-Comparatives with the top Advanced+ award, and it was one of the lighter suites on a low-end PC (impact 5.5). The free tier is genuinely usable. The catch is not the engine but the history: the 2019 Jumpshot data-selling scandal and the US FTC's 16.5 million dollar order in 2024, both covered below.

Avast is one of the most-installed security brands in the world, largely on the strength of a free antivirus that millions of people actually use. Avast One is its modern, unified suite spanning free and paid tiers. This review is for anyone weighing whether to trust Avast in 2026 — which means addressing both the quality of the product and the 2019 Jumpshot data scandal head-on. Our one-line verdict: Avast One is a capable suite with a genuinely useful free tier, best chosen by people who are comfortable with its post-2020 privacy commitments.

The short take: Avast One Free is one of the best no-cost antivirus options you can install today. If you would rather pay for the top-scoring suite with no privacy baggage, see our Bitdefender review and the head-to-head Bitdefender vs Avast.

Who Avast One is best for

Avast One is the natural choice for people who want real protection without paying upfront. The free tier is not a crippled trial — it provides genuine real-time malware defence, basic web protection and a slice of VPN data, which is enough to keep a careful user safe at no cost. That makes it ideal for students, second machines, and anyone who wants to try a product properly before committing. The paid tiers then add unlimited VPN, identity protection and performance features, so you can start free and upgrade in place if your needs grow. If you want one app that scales from free to full suite, Avast handles that path well.

Who should skip it

There are two clear reasons to look elsewhere. The first is principle: if the Jumpshot history (below) is a dealbreaker for you, that is an entirely defensible position, and Bitdefender carries no comparable controversy. The second used to be its lab results, and that reason has expired: AV-TEST's June 2026 round for home Windows scored Avast Free Antivirus 26.4 and 26.5 at 6/6/6 across protection, performance and usability, the same card as Bitdefender Total Security and Norton 360, and AV-Comparatives' February to May 2026 real-world test recorded Avast blocking 397 of 400 cases at 99.3% with an ADVANCED+ award. Detection is no longer the argument against it; the 2024 order is.

The product today

Setting history aside for a moment, Avast One in 2026 is a credible suite. The detection engine — shared with sister brand AVG — performs strongly against both known and novel malware, with behavioural monitoring to catch new threats. Web and email shields block malicious and phishing sites, a ransomware shield guards your important folders from unauthorised changes, and the paid tiers fold in an unlimited VPN and data-breach monitoring. The interface is modern and approachable. In short, the software does its job; the questions worth asking are about trust and value, not basic competence.

The 2019 Jumpshot scandal, in context

You cannot responsibly review Avast without addressing this. In late 2019 and early 2020, investigative reporting revealed that Avast's subsidiary Jumpshot had been collecting browsing data from free Avast users and reselling it, in packaged form, to corporate clients. The "anonymisation" involved was fragile enough that researchers warned individuals could in some cases be re-identified. Avast announced it would wind Jumpshot down within days of the story breaking.

The story did not end there. On 22 February 2024 the U.S. Federal Trade Commission announced an order against Avast. In the FTC's own words, the company had "unfairly collected consumers’ browsing information through the company’s browser extensions and antivirus software, stored it indefinitely, and sold it without adequate notice and without consumer consent". The figure was 16.5 million dollars, and the order bars Avast from selling or licensing browsing data from its branded products to third parties for advertising purposes. Our reading is pragmatic: the unit responsible was dismantled, the conduct now carries legal consequences, and the product operates under data-handling rules that are in some respects stricter than competitors face. That does not erase what happened — and if it costs Avast your trust, that is a reasonable judgement to make.

Performance and usability

Avast One runs comfortably on modern hardware, with scan scheduling and a do-not-disturb mode to keep it out of your way during games or presentations. AV-TEST scored the June 2026 build a full 6 out of 6 on its performance axis, and AV-Comparatives' April 2026 Performance Test — run on a deliberately low-end PC with an Intel Core i3 and 8 GB of RAM — measured Avast Free at 5.5 (lower is lighter), ahead of Bitdefender (9.6) and Microsoft Defender (12.9) and just behind Norton (5.3). The footprint is not the compromise it once was, though on a very old machine any full scan is noticeable. The unified dashboard is one of the cleaner ones in the category, and the free-to-paid upgrade path is seamless — no reinstall required.

Plans and pricing

Avast One spans a free tier and paid individual and family tiers, with the paid plans differentiated mainly by VPN, identity features and device counts. Introductory pricing is competitive and renewals rise, as everywhere in this market, so disable auto-renew and re-shop annually. Confirm current tiers and prices on the live site before buying.

See how the free and paid options stack up across the field in our best antivirus roundup and our free vs paid antivirus guide. For the wider picture beyond antivirus alone, see our shortlist of security tools.

Pros and cons