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How we tested
We used each tool over 3 months with real accounts. We evaluated signup flow, core features, support responsiveness, and pricing transparency. We never accept payment for positive reviews.
Read our full methodology →People often ask whether they need an antivirus if they already use a VPN. The short answer: yes, they do different jobs.
Here’s the breakdown.
What we tested
We ran both tools side-by-side for three months: NordVPN for traffic encryption and Bitdefender for device protection. We tested public Wi-Fi scenarios, phishing attempts, and malware detection to confirm where each tool stops and the other begins.
What a VPN does
A VPN encrypts your internet traffic and routes it through a server. It protects your data in transit — meaning no one on the same network (like public Wi-Fi) can intercept what you’re sending.
But a VPN does not scan your device for malware. If you download an infected file, the VPN won’t stop it.
What an antivirus does
An antivirus scans your device for malicious software and removes it. It protects your device from threats that are already on it or that you’re about to download.
But an antivirus does not encrypt your traffic. If you’re on public Wi-Fi without a VPN, someone could still intercept what you send.
Why you need both
The two tools cover different attack surfaces:
- VPN protects you in transit
- Antivirus protects you on your device
Most modern threats exploit both. A phishing email might trick you into downloading malware (antivirus catches it), and then that malware might try to send your data to an attacker (VPN prevents interception).
How to combine them
The easiest approach is to use tools that work well together. NordVPN and NordPass come from the same company, and Bitdefender’s premium tiers include a VPN and password manager. Bundling reduces cost and complexity.
If you prefer to mix and match, that’s fine too. Just make sure you have:
- A VPN for encrypted browsing (especially on public Wi-Fi)
- An antivirus for device-level protection
- A password manager for strong, unique passwords
Frequently Asked Questions
Can a VPN replace antivirus? No. A VPN protects data in transit but does not scan your device for malware. You need both for complete protection.
Can antivirus replace a VPN? No. Antivirus protects your device but does not encrypt your internet traffic. Without a VPN, your data is exposed on public networks.
What’s the minimum I need for public Wi-Fi safety? A VPN is the single most important tool. But you should also have antivirus installed, stick to HTTPS sites, and avoid entering sensitive information on untrusted networks.
The Bottom Line
A VPN alone is not enough, and an antivirus alone is not enough. If you care about your security, you need both — plus a password manager.
Start with the one that addresses your biggest risk. If you use public Wi-Fi often, start with a VPN. If you download a lot of files or you’re not sure about your security habits, start with an antivirus.
About the author: Dawood is the Founder & Lead Reviewer of StackCompare.Learn more about our testing process →