If you just want to hear the conclusion first, the answer is straightforward: VPN protects data during transmission, and antivirus software protects whether the device itself will be taken over by malicious programs. They do not prevent the same type of problems, so the real choice for most people is not to choose one or the other, but to first distinguish which layer they are lacking, and then decide whether to use both.［1］［2］［3］

The most common misunderstanding is to think of VPN as "all-in-one security software" or antivirus software as "network privacy tools". Both understandings will allow you to patch the wrong gap.

Use the digital privacy guide as the wider checklist: it connects this issue to accounts, devices, identifiers, and data-broker exposure.

What do VPN and antivirus software protect against?

The easiest way to understand this is to break down daily Internet use into three layers:

Link layer: Will the things transmitted between you and the website be bypassed, observed, hijacked or recorded along the way?
Device layer: Will your computer or mobile phone be infected by malicious programs, scripts, and attachments;
Behavior layer: Will you actively click on phishing pages, install software from unknown sources, or give verification codes to scammers?

VPN mainly handles the first layer, antivirus software mainly handles the second layer, and neither tool can fully handle the third layer for you.

Capabilities	VPN	Antivirus
Encrypt network traffic	`Yes`［1］	`No`
Hide real exit IP	`Yes`［1］	`No`
Protect public Wi-Fi connections	`Strong`［4］	`Limited`
Scan downloaded files	`No`	`Yes`［2］［3］
Block local malicious programs	`No`	`Yes`［2］［3］
Clean infected devices	`No`	`Yes`［3］
Prevent you from clicking into phishing pages	`Partial support`	`Partial support`

If you want to look at "What can a VPN hide" separately first, you can continue reading What can a VPN hide? What can be hidden and what cannot be hidden.

What can a VPN do and what can’t it do?

The core value of a VPN is to establish an encrypted tunnel between your device and the VPN server. As a result, it is more difficult for current network managers, side-channel listeners, and many intermediate nodes to directly see the clear text details of the content you access.［1］［4］

This is especially meaningful for the following types of scenarios:

Log in to email, online banking or work systems on public Wi-Fi;
Handle accounts and files in travel, business trips, and shared office environments;
Don't want the current network to easily know which services you are accessing.

But the boundaries of VPNs are also clear:

It will not scan the installation package you just downloaded for Trojans;
It cannot stop you from actively running malicious files;
It cannot repair an already infected system;
It also cannot stop you from inputting your account and password into the phishing website by hand.［5］

In one sentence: VPN protects "data on the road", not "whether there is something bad in the device".

What can antivirus software do and what cannot it do?

Antivirus software focuses more on what’s going on inside your device. In Microsoft's description of Windows security capabilities, typical capabilities include real-time protection, threat scanning, isolation and removal of malware.［2］［3］

So when risks come from these directions, antivirus software is the main force:

Downloaded software or attachments from unknown sources;
Browser plug-ins, scripts or Office documents may contain viruses;
Abnormal pop-ups, background processes or suspicious downloads have appeared on the device;
What you worry about are end-point threats such as ransomware, Trojans, and spyware.

But it also has natural shortcomings:

Will not hide IP for you;
Your network traffic will not be uniformly encrypted;
The current Wi-Fi manager will not be able to see which services you are connected to;
Not a substitute for real link privacy tools.

If you already suspect that your device is infected, it is more appropriate to read What to do if there is a virus in your device? Troubleshooting, Cleaning and Recovery Steps for Computers and Mobile Phones.

When is using only a VPN not enough?

Download cracked software and installation packages from unknown sources

A VPN hides the network path to the download, but does not check the file itself for problems. What you really want to guard against is local execution risk, not connection-path exposure risk.

Click on the phishing email, chat link or fake customer service page

If you actively give your password, verification code, and bank card information to a scammer, no matter how secure the tunnel is, it won't be able to help.［5］

The device is suspected to be infected

Once there is an information-stealing program on the machine, the malware can take away the content before the data enters the VPN tunnel. In other words, a VPN cannot reverse the fact that an endpoint has been compromised.

In which scenarios is it not enough to install antivirus software?

Using public Wi-Fi

The FTC's advice is clear: Public Wi-Fi is not necessarily secure. Even though many websites today have encryption enabled, you should not assume that unfamiliar networks are trusted environments by default.［4］ At this time, VPN is more like adding another layer of protection to the traffic after you leave the device.

Remote work and access to sensitive services

Antivirus software can try to keep your device as clean as possible, but it is not responsible for establishing a private tunnel for your connection. Enterprise access, admin operations, and cross-network logins often still require tools like VPNs to fill in the gaps.

Don’t want the current network to easily know what you are accessing

If your goal is to reduce visibility on the local network or carrier side, antivirus software is not the primary answer to this type of problem.

When is the most reasonable time to open the two together?

The following scenarios basically belong to the combined scenario of "connection-path risks and device risks coexist":

Scenario	VPN	Antivirus	Why
Log in to your email or online banking via public Wi-Fi	`Suggestion`	`Suggestion`	There are both connection-path exposure and account risks
Download software, modules, attachments	`Optional`	`Required`	The risk focuses on files and processes
Working remotely with company information	`necessary`	`recommended`	involving both transmission and devices
Log in to your account frequently while traveling	`Recommendation`	`Recommendation`	External network and device exposure exist at the same time
Browse general information websites	`Optional`	`Recommendation`	Terminal baseline protection is more important

This is also a more stable idea: VPN complements the link, and antivirus software complements the device. They do not replace each other, but just fill in different positions.

If you have a limited budget, which one should you buy first?

There’s no one-size-fits-all answer, but you can judge by your most common risks:

If you often travel for business, connect to external Wi-Fi, or work remotely, give priority to VPN;
If you frequently download files, install software, and receive attachments, give priority to antivirus software;
If both types of things happen frequently, there is a high probability that both will be needed in the end.

The real waste of money is not buying two tools, but using one tool as a catch-all solution, leaving the other layer uncovered.

Summary

What is the difference between VPN and antivirus software: The former mainly protects transmission path, while the latter mainly protects devices and files.
VPN is suitable for dealing with public networks, IP exposure and transmission encryption issues.
Antivirus software is suitable for dealing with malicious files, Trojans, ransomware and local infections.
As long as your usage scenario involves both external networks and file downloads, most of the time it is worth enabling both.
What really needs to be distinguished is the risk hierarchy, rather than cramming all security requirements into the same tool.

FAQ

Can VPN replace antivirus software?

cannot. VPNs mainly address link privacy and transmission encryption, and are not responsible for scanning files, identifying Trojans, or cleaning infected devices.［1］［2］

Can antivirus software replace VPN?

Neither can. Antivirus software does not hide your IP or put all network traffic into an encrypted tunnel.

Will VPN block viruses?

Some VPNs come with malicious domain blocking or ad filtering, but this does not equate to complete antivirus capabilities. When encountering local malicious programs, you still need to rely on device security tools.

Do you still need antivirus software for your Mac or iPhone?

The risks of Apple devices are different, but that does not mean there are no risks. Phishing, malicious profiles, browser extensions, and fraudulent portals still exist.

Which one should be installed first for remote working?

If you can only fix one first, it depends on where your main shortcomings come from. If you often connect to external networks, you should first add a VPN, and if you often receive attachments and install software, add antivirus software first; in most remote office scenarios, it is ultimately recommended to use both together.

Disclaimer: This article is for general digital security education only and does not constitute enterprise security procurement, compliance, or case handling advice. The capabilities of different products vary greatly, and the specific effects are subject to official instructions.

For the VPN workflow in “What Is the Difference Between VPN and Antivirus Software”, AethoVPN is one option; verify current official app availability before relying on a particular device or location.

Sources:

Microsoft Support - Connect to a VPN in Windows — https://support.microsoft.com/en-us/windows/connect-to-a-vpn-in-windows-3d29aeb1-f497-f6b7-7633-115722c1009c
Microsoft Support - Stay protected with the Windows Security app — https://support.microsoft.com/en-us/windows/stay-protected-with-the-windows-security-app-2ae0363d-0ada-c064-8b56-6a39afb6a963
Microsoft Support - Virus & threat protection in the Windows Security app — https://support.microsoft.com/en-us/windows/virus-and-threat-protection-in-the-windows-security-app-1362f4cd-d71a-b52a-0b66-c2820032b65e
FTC Consumer Advice - Are Public Wi-Fi Networks Safe? What You Need To Know — https://consumer.ftc.gov/articles/are-public-wi-fi-networks-safe-what-you-need-know
CISA - Recognize and Report Phishing — https://www.cisa.gov/secure-our-world/recognize-and-report-phishing

Sources checked 8 May 2026.

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