How to choose the right antivirus
Not sure which antivirus to buy? Here is what actually matters.
- Check independent lab scores. Look at AV-TEST and AV-Comparatives for real protection results.
- Consider system impact. Good antivirus protects without slowing your PC.
- Match features to your needs. VPN, password manager, backup or identity protection, only if you want them.
- Compare first-year and renewal pricing. Renewals often cost far more than the intro price.
What actually matters
Marketing makes every antivirus sound the same, so ignore the badges and look at evidence. The best single signal is independent lab testing: AV-TEST and AV-Comparatives run identical malware against every product and publish protection, performance and false-positive scores. After protection, weigh how light it is on your PC and which extras — a VPN, password manager, backup or identity monitoring — you would actually use.
Free vs paid
Microsoft Defender is a solid baseline built into Windows, and free tools can catch known threats. Paid suites add stronger real-time web and phishing protection, better support and bundled extras. For most people a cheap first-year plan is worth it — and Malwarebytes free makes an excellent on-demand second opinion alongside your main antivirus.
Common mistakes to avoid
- Buying on the first-year price alone — renewals are often far higher, so check them.
- Running two real-time antivirus programs at once, which conflict and slow your PC.
- Paying for bundled extras you will never open.
FAQ
Is Windows Defender enough?
It is a good baseline. A dedicated antivirus adds stronger web and phishing protection plus extras Defender lacks — worth it if you shop, bank or download a lot.
Which antivirus is best overall?
In our testing Bitdefender is the best all-rounder — top protection with a light footprint. See our best antivirus guide for the full ranking.