What a VPN Does to Protect Your Computer

A padlock sitting on a computer keyboard indicating a secure computer.

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A virtual private network (VPN) can help to protect your computer and your information from sniffers. A sniffer is a computer program that is used to decode data to make it readable but in nefarious ways. The bad guys use sniffers to spy, steal data, hijack devices, and even steal identities.

Sniffers are also used by the good guys to determine how secure a network is. Unencrypted data is very vulnerable to sniffers, as is any info that comes through your browser that isn’t secure. Wireless connections are also particularly vulnerable to sniffers. Fortunately, you can use a virtual private network, or VPN, to protect yourself.

What a VPN Is

A virtual private network, or VPN, is a network that allows you to communicate over a public, unsecured, unencrypted network privately. Most VPN tools have specific versions of encryption to secure your data. For instance, you might work from home, but you still need to send information to your office. Your business network might be very secure, but your home network might not be. However, you can use a VPN to protect yourself. Another example of a VPN is a remote access version.

With this, you can take it on the road. And, on the road, when you use the internet on a computer or other device on a public network that is not protected, your information is very vulnerable to sniffers. People use these in places that offer free Wi-Fi such as airports, hotels, and coffee shops.

This form of VPN helps to protect the data sent between your laptop or mobile device to an internet gateway. Essentially, a VPN makes a type of tunnel that prevents hackers, snoopers, and internet service providers (ISPs) from looking at your instant messages, the browsing history, credit card information, downloads, or anything that you send over a network.

What a VPN Does

Security: A VPN encrypts the entire web session of the user. It makes every website just as secure as a bank or other financial sites.

Bandwidth Compress: A VPN compresses all of the traffic on the server before sending it to you. This allows you to have more access to your data.

Access: There are lots of restrictions online imposed by various companies about where and when you can use their services. Further, many oppressive governments restrict the information that would lead to “free-thinking”. A VPN allows users to have uncensored, secure access to anything on the internet.

Privacy: A VPN masks the addresses of users and protects a person’s identity from tracking.

Why a VPN Is So Important

Here’s the deal; your personal information is out there and people want it. However, you certainly don’t want this info to get into the wrong hands. No matter where you use your device, you are at risk of an infection or a data breach. Any unprotected internet connection is dangerous, but if you use a VPN, your transmissions are protected.

Why You Might Need a VPN

You might wonder if you need a VPN. Well, what you should be asking is if you want to go out into the wild web without protection. If you do this, anyone within about 500 feet, and as little as 300 feet, in some cases, can get all of your data. Of course, they have to have the right knowledge and tools. What can they see? Everything from your comments on a local news article to your bank account number and password.

If you are questioning if you need a VPN or not, you probably think that you have nothing to hide or that you have no information that a hacker would want. However, if you are online, someone wants your info. This might be as simple as an advertiser watching what sites you are visiting so they can send targeted ads. Or, it might be much more sinister.

So, should you VPN or not? It’s a good idea when you are on any mobile device, including phones and tablets. You should also use a VPN if connecting to a public internet connection, such as at a hotel. Do you need it in your home? Maybe not, so you might want to use it on a case by case basis. VPNs are pretty cheap, if not free, so it might be a good investment.

A Proxy vs. a VPN

You might have also heard of a proxy. It’s similar to a VPN but not quite the same. A VPN is a virtual network that allows you to privately communicate over an otherwise public network. As explained above these networks protect your data between devices, including PCs, Macs, Androids, iPhones, laptops, iPads, and an internet gateway.

The network does this by crafting a secure tunnel that is impenetrable. This keeps hackers, snoopers, and any ISP from viewing your activity. This includes web-browsing, downloading, instant messages, and anything else that you might send over a particular network.

A proxy server, on the other hand, is a bit different. If you use a proxy, your internet activity is anonymous. There are different ways that this works. For one, the destination server, which is the server that accepts a certain web request, gets these requests from the proxy server. This keeps you anonymous. Without a proxy server, you are no longer anonymous.

Both proxies and VPNs are designed to change a person’s IP address. They also manipulate your browsing practices. This allows someone in a particular country to access sites that are often restricted, such as Facebook or YouTube.

However, keep in mind that a proxy doesn’t encrypt your connection. This means that the information you are sending and receiving on the network could be stolen or intercepted if you are on a public Wi-Fi connection. However, a VPN, not only acts just like a proxy, but it also encrypts your information.

The Power of VPNs

A VPN encrypts, or scrambles, data so that a hacker cannot tell what a person is doing online. In other words, a VPN offers a type of tunnel, which is where the data goes. This tunnel cannot be penetrated, and your transmissions cannot be viewed.

The VPN connection is private, and it can make any public network private for those who use them. Also, the VPN can be used on a desktop or any mobile device including laptops, phones, and tablets.

Perhaps most importantly, a VPN protects data. This data includes instant messages, e-mail communications, downloads, login information, and which sites you visit. The VPN alters your IP address, too. This makes it seem like you are using your computer elsewhere. This makes it possible to access sites like Facebook if they are otherwise blocked.

The Power of a Proxy Server

A proxy server makes sure the user can browse with anonymity. This means the site you visit would not be able to identify anything about you. This includes your location. This comes in handy if you are somewhere that bans certain sites, such as social media.

With a proxy server, your transmissions and data are not hidden nor encrypted. So, it can still be seen, but the server doesn’t know who is behind the actions. This also means that hackers can still access information if they can get to it, such as on a public Wi-Fi connection.

Many people use a VPN with a proxy server as it gives the user the best of both worlds. You are safe and you are anonymous. However, even when you do this, there is something to be said about being cautious when on a public Wi-Fi connection. A good rule of thumb is to only access websites that don’t require any personal or sensitive information when on a public Wi-Fi connection.

Using Public Wi-Fi Connections

Never leave your device alone when connected to public Wi-Fi—not even for a minute, such as going to a restroom. You might come back to see your laptop still there, but you also might have something a bit extra like a keylogger. This is used to capture keystrokes.

Secure Your Location

Look at your surroundings before settling into a spot for browsing. Do not let anyone see your screen. If you can, sit so that your back is to a wall.

Take a look at the networks before connecting to them. Make sure you are connecting to the right network and not to a network that is specifically set up to collect information, it might say “free wifi”. Assume any Wi-Fi link is suspicious. Any link can be set up by a hacker, so exercise caution. Try to confirm any link by looking at the address closely.

Ask an employee to confirm the name of the network. Hackers are clever. If you are at Joe’s Coffee Shop and see two networks, JoescoffeeWifi and JoescoffeshopWifi, which one do you connect to?

Secure Transactions

Never do any online banking or work with sensitive information when connected to these networks. Likewise, don’t e-mail anything of a sensitive nature. Save these e-mails for when you are on a secure network. Do not turn on file sharing when connected to public Wi-Fi. If you don’t need to connect to a wireless connection, don’t leave your Wi-Fi on.

Only visit sites that you don’t have to enter any personal information into. Save the others for a secure network.

The Bottom Line

After all, it is said and done, it’s probably in your best interest to use a VPN. Hackers cannot get into these networks, nor do they have any access to them. When you choose a VPN, your data, browsing habits, and personal information are safe. All of the information you send remains encrypted, so you don’t have to worry about doing your banking or accessing any sensitive information.

You can also download sensitive information and send sensitive e-mails. Just make sure that there are no wandering eyes that are looking at your screen. Otherwise, you still might put yourself at risk of snoops or thieves accessing your information.