Will using a VPN help protect me from malware or ransomware? [Ask ZDNet]

VPNs are resource-intensive and can take a huge toll on your network bandwidth, which is why you should only employ them when you need them.

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Welcome to another installment of Ask ZDNet, where we tackle the questions even Google can’t solve.  

In the mailbag this week: Why should I consider a VPN? 

Security and privacy are closely related, but they’re not the same thing. Understanding the difference is key to understanding what a VPN does and doesn’t do.

The basic concept behind a VPN is simple: software running on your PC encrypts every bit of network traffic before it reaches your PC’s network adapter, then it sends that encrypted data to a remote server that’s operated by the VPN service. That remote server sends the data to the public internet. The encrypted “tunnel” between your device and the VPN server is what makes the network both virtual and private. Many corporate networks will only allow remote connections over a VPN. Still, you can also buy consumer-grade VPN software for connecting to untrusted networks, such as those found in airports and coffee shops.

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The benefit of this type of network is twofold. First, it prevents anyone on your local network from spying on your internet traffic. That’s especially important if you’re using a Wi-Fi network that’s not under your control. 

Second, it allows you to disguise your location, which prevents some types of tracking and also makes it possible to bypass geographic restrictions on some services. If you’re in Europe and want to watch a movie that’s restricted to the US, you might be able to fool the streaming service by connecting to a VPN in the US.

VPNs are resource-intensive and can take a huge toll on your network bandwidth, which is why you should only employ them when you need them.

When I’m in an airport or hotel, I prefer to tether my mobile phone to my laptop (or bring a device with a built-in cellular connection) to avoid the risks that come with that untrusted network. But if the cellular signal is weak or unavailable and I have no other choice than to connect to that public Wi-Fi, I use the paid FastVPN service from NameCheap. My colleague Jason Perlow uses ExpressVPN

“It’s compatible with OpenVPN, an open source VPN protocol,” he says, “which means I can use it with all the devices I own — iOS, Android, Windows, even on my network firewall.” 

Regardless of which option you choose, nothing in that virtual private network looks for threats to your PC. For that sort of protection, you need security software that’s specifically designed to sniff out malicious software and dangerous connections.

Also: The best antivirus software and apps

Send your questions to Due to the volume of submissions, we can’t guarantee a personal reply, but we do promise to read every letter and respond right here to the ones that we think our readers will care about. Be sure to include a working email address in case we have follow-up questions. We promise not to use it for any other purpose.  

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