The Best Free Antivirus Programmes of 2025

Stay safe without spending a penny

Cyber-threats are always evolving: malware, phishing, ransomware, zero-day threats … the lot. But not everyone wants—or needs—to pay for premium antivirus. 

Fortunately, several free options offer surprisingly strong protection. Here are the top free antiviruses in 2025, what they do well, and what their limitations are.

What to Look for in a Free Antivirus

Before we get started, here are the essentials you want your antivirus to deliver:

Strong detection rates against known and new threats

Real-time protection, not just manual scans

Minimal impact on system performance

Frequent updates for definitions and the engine

Useful extras like phishing protection or browser safety tools

Trustworthy privacy practices with minimal upselling

Top Free Antivirus Programmes

Bitdefender Free Antivirus

Bitdefender continues to rank highly for malware detection and overall reliability. It’s lightweight, easy to use, and keeps itself updated automatically. However, it doesn’t include many extras—advanced tools like a firewall or parental controls are reserved for the paid version.

Avast Free / Avast One Basic

Avast’s free edition is packed with features, including phishing protection and network scanning. It runs on multiple operating systems, making it a good choice for households with a mix of devices. The trade-off is regular upgrade prompts and a reputation for being a little heavy on system resources.

Avira Free Security

Avira is known for excellent all-round protection with minimal impact on performance. It even throws in a free VPN (with limited data) and a password manager. The catch is that the VPN allowance is tiny, and you’ll see frequent reminders to upgrade.

AVG AntiVirus Free

AVG, which shares the same parent company and detection engine as Avast, delivers a clean interface, solid protection, and helpful features like email and link scanning. Like Avast, it comes with its share of upgrade prompts and keeps some functions fairly basic.

Microsoft Defender

Built into Windows, Defender offers a surprisingly good level of protection for a free programme. It requires no extra installation, integrates neatly with Windows, and has improved significantly in independent lab tests. Its main weakness is the lack of extra features such as VPNs, password managers, or advanced firewall controls.

Kaspersky Security Cloud – Free

Kaspersky’s free edition uses the same strong detection engine as its premium products. It’s efficient, easy to use, and doesn’t slow your system down. The free version does come with restrictions—VPN and password manager tools are capped—and some users remain cautious about data privacy.

Which One Should You Use?

If you want minimal fuss and strong detection, Bitdefender Free or Microsoft Defender are excellent choices.

If you’re after extra tools like a VPN or password manager, Avira or Avast are worth a look.

If you have an older PC, Bitdefender and Defender are the most lightweight.

If you want cross-platform protection across Windows, Mac, and mobile, Avast and Avira are more versatile.

Trade-Offs of Free Antivirus

Free antivirus software almost always comes with some limitations:

Regular prompts to upgrade

Restricted features, such as VPNs with data caps or firewalls locked behind paywalls

Limited customer support (forums instead of direct help)

Potential performance slowdowns on lower-spec machines

Privacy trade-offs, as some providers collect more data in free versions

Final Verdict

Free antivirus software is now good enough for most everyday users. For strong, simple protection, Bitdefender Free Antivirus is hard to beat. For those who want bonus extras like a VPN or password manager, Avira Free Security is a solid option.

Paid antivirus suites are still worth considering if you need advanced features, multiple device coverage, or identity protection. But for home users who simply want to browse, shop, and bank online safely, today’s free antivirus programmes can do the job very well.

Is the pension protection scheme weathering the storm?

Apparently so, according to the Pension Protection Fund (PPF), which is also responsible for the Financial Assistance Scheme. Good news for troubled pension schemes and their members, independent trustees who must  undertake PPF assessment & FAS assessment and other pension-industry watchers.

Although PPF chief executive Alan Rubenstein describes the economic climate of the past couple of years as “challenging”, the PPF had sailed through troubled waters relatively smoothly.

Figures published for the financial year 2009/2010 show the PPF with a surplus of £400m as a result of strong investment returns and a reduction in claims by pension schemes eligible for PPF. Results for the last financial year, which have yet to be published, are expected to show further improvements.

In an upbeat, state-of-play assessment, Mr Rubenstein says, “The past two years have seen challenging times for the economy at large, as well as for the pensions industry more specifically. Financial crises, subdued growth, turmoil in the bond markets - we are all familiar with the story and the underlying causes.“But far from being tossed about on stormy financial seas and at risk of foundering on the rocks of rising insolvencies, the Pension Protection Fund has sailed through these troubled waters relatively smoothly.”

But Mr Rubenstein did sound a note of caution. He warned that the PPF's strong funding position was not something that could be taken for granted.

He said, “In an ever changing world, we need to understand our risks and plan our future funding, so that we can give everyone - members, levy payers and government - confidence that we will be around to pay the vital compensation we provide, not just for next year, or even the next ten years, but as long as we are needed.

That is why the funding strategy that we published last year is so important. This strategy charts a course over the next 19 years, as the risks we face evolve, toward a future in which the PPF can expect to be self-sufficient. That will mean a future in which the levy ceases to be a significant source of income for the fund, with our success or failure increasingly depending on our ability to manage our investments and risks together.”

In the meantime, said Mr Rubenstein, the levy would continue to be an important component of PPF resources. It was right that the way it was raised should be consistent with the PPF's approach to its funding strategy. However, the design of the levy also needed to be a better match with the expectations of stakeholders.

Mr Rubenstein added, “Our changes to the levy from 2012/13 aim to combine these two requirements and the responses that we received to our consultation on our proposals indicated we were on the right track. There was strong support for the broad thrust of our proposals, with stakeholders viewing them as a significant improvement on the current levy framework.

A key change from 2012/13 will be that we will aim to set the rules for the levy for a three year period, rather than changing the way the levy is calculated every year. A scheme’s levy will still vary depending on movements in its risk, which is appropriate, although we are also making changes to smooth the assessment of risks which should help make bills more stable and predictable. Together with the stronger emphasis on scheme funding in the new formula, we believe this gives schemes more control over the levers that influence their levy.”

The PPF raises some of its funding through the pension protection levy. The levy helps towards the compensation payable to members of schemes that transfer to the PPF. All UK defined benefit (final salary) pension schemes eligible for PPF compensation pay the pension protection levy.