Providers can also log less-specific data about when or how often you connect to your VPN service. In some cases, these logs are a routine part of server or account management, and can be responsibly separated and scrubbed. In other cases, VPN providers take note of every connection and use that information to actively police individual customers. Though it’s reasonable for companies to protect their networks from abuse, it becomes a dealbreaker when companies keep extensive connection data for a longer period of time. Some VPN companies we spoke with explained how a log might note your current connection for authentication purposes, but that log is deleted as soon as you disconnect. This kind of “live log” isn’t a concern, and even those culled every few hours—or as long as the end of each day—shouldn’t be confused with logs of your traffic and online destinations.
ProtonVPN has the unique distinction of placing no data restrictions on free users. You can browse as much as you want, as long as you want. You will be limited to just one device on the service at a time and can only choose between three server locations, but the unlimited data makes up for all that. It doesn't hurt that ProtonVPN, from the same people that brought you super-secure ProtonMail email, is very concerned about security and customer privacy. For all that, ProtonVPN is our Editors' Choice for free VPN.
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One popular technology to accomplish these goals is a VPN (virtual private network). A VPN is a private network that uses a public network (usually the Internet) to connect remote sites or users together. The VPN uses "virtual" connections routed through the Internet from the business's private network to the remote site or employee. By using a VPN, businesses ensure security -- anyone intercepting the encrypted data can't read it.

Speed-wise, Avast SecureLine did well in our European speed tests, with us recording over 9.83MB/s (78.64Mbit/s) in our file transfer tests to the Netherlands. Its US performance was a little below average but still decent at 3.22MB/s (25.76Mbit/s), although UK performance was a bit slower than in our last round of tests, at 6.5MB/s (52Mbit/s) via FTP and 5.8MB/s (46.4Mbit/s) for an HTTP download.
The NordVPN client provided one of the most attractive interfaces, and connecting to a VPN server was straightforward and very quick. We found performance to be somewhat spotty, however, with our fastest connection running at 53 Mb/s down and 26 Mb/s up, compared to 125 Mb/s down and 20 Mb/s with the VPN connection turned off. We did have an issue connecting to Netflix, but Amazon Prime Video ran without issue. Our other internet tests went without a hitch.
Finding the best free VPN is an exercise in balancing those restrictions. TunnelBear, for example, lets you use any server on its network but limits you to 500MB-1GB per month. Avira Phantom VPN lets you use as many devices as you like and any server you like, but also restricts you to 500MB per month. AnchorFree Hotspot Shield also places no limits on the number of devices, but restricts you to 500MB per day and only US-based servers. Kaspersky Secure Connection also doesn't limit your devices but doesn't let you choose a VPN server—the app does it automatically.
Since we last tested VPNs, we've given special attention to the privacy practices of VPN companies and not just the technology they provide. In our testing, we read through the privacy policies and discuss company practices with VPN service representatives. What we look for is a commitment to protect user information, and to take a hands-off approach to gathering user data.
VPN was not the first technology to make remote connections. Several years ago, the most common way to connect computers between multiple offices was by using a leased line. Leased lines, such as ISDN (integrated services digital network, 128 Kbps), are private network connections that a telecommunications company could lease to its customers. Leased lines provided a company with a way to expand its private network beyond its immediate geographic area. These connections form a single wide-area network (WAN) for the business. Though leased lines are reliable and secure, the leases are expensive, with costs rising as the distance between offices increases.
For features, they offer multi-hop VPN cascades, advanced firewall configuration options (DNS and IP leak protection), port forwarding, NeuroRouting, Socks5 and Squid proxies, obfuscation features to defeat VPN blocking (Stealth VPN), and a customizable TrackStop feature to block tracking, malware, and advertising. Perfect Privacy is one of the few VPNs offering full IPv6 support (you get both an IPv4 and IPv6 address).
A Virtual Private Network is a connection method used to add security and privacy to private and public networks, like WiFi Hotspots and the Internet. Virtual Private Networks are most often used by corporations to protect sensitive data. However, using a personal VPN is increasingly becoming more popular as more interactions that were previously face-to-face transition to the Internet. Privacy is increased with a Virtual Private Network because the user's initial IP address is replaced with one from the Virtual Private Network provider. Subscribers can obtain an IP address from any gateway city the VPN service provides. For instance, you may live in San Francisco, but with a Virtual Private Network, you can appear to live in Amsterdam, New York, or any number of gateway cities.

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While you're connected to a VPN, all your network traffic passes through this protected tunnel, and no one—not even your ISP—can see your traffic until it exits the tunnel from the VPN server and enters the public internet. If you make sure to only connect to websites secured with HTTPS, your data will continue to be encrypted even after it leaves the VPN.
Natively on your operating system with the built-in VPN functionality (no apps required). Many operating systems natively support VPNs: Windows, Mac OS, Android, and iOS. To use this you will need to import your VPN’s configuration files onto your device. This will use the IPSec/IKEv2 or IPSec/L2TP protocols, rather than OpenVPN, since OpenVPN can only be used through apps. (PPTP is also sometimes supported, but this VPN protocol is not recommended due to security vulnerabilities.)
In 2011, a LulzSec hacker was arrested for his involvement with an attack on the Sony Pictures website. Cody Kretsinger used HideMyAss VPN to conceal his identity, but the company complied with a court order to hand over evidence that led to his arrest. This occurred in spite of the company’s pledge not to keep any logs of user activity. HMA says it does not log the contents of its users’ internet traffic, but it does keep detailed metadata logs that include users’ real IP addresses, which was enough to charge Kretsinger with a crime.
However, if you’re using a top-tier VPN service, the difference in speed usually isn’t noticeable, and can sometimes speed up your connection. You can still watch streaming videos and download large files without interruption. Our VPN servers are among the fastest in the industry and we work hard to keep it that way. Download Hotspot Shield VPN and get privacy protection without sacrificing speed.
Along with securing your private information and activity online, a VPN for home is a great way to stream your favorite TV shows and movies. When using a VPN, you can be sure that your online activity is secure and private, so you can simply enjoy your TV show or movie. Be sure to choose the best home VPN for your needs, such as one that works well with Windows, to help make movie and TV show streaming a possibility for you.  
Another reason you might choose to use a VPN is if you have something to hide. This isn't just about folks doing things they shouldn't do. Sometimes people really need to hide information. Take, for example, the person who is worried he or she might be discriminated against by an employer because of a sexual preference or medical condition. Another example is a person who needs to go online but is concerned about revealing location information to a person in their life who might be a threat.
Google is full of articles claiming that a VPN will prevent ISPs from gathering metadata, but unfortunately that is not true. A VPN hides the contents of your internet traffic and your location from the outside world, but you still have to rely on your ISP’s network to get there. Strictly speaking a VPN cannot prevent an ISP from logging your location, device details, and traffic volume.
When you're away from home or the office and you connect to the internet, you'll most often be doing so via Wi-Fi provided by your hotel or the restaurant, library, or coffee shop you're working out of in that moment. Sometimes, the Wi-Fi has a password. Other times, it will be completely open. In either case, you have no idea who else is accessing that network, and therefore, you have no idea who might be snooping on your traffic.
To narrow the hundreds of VPN providers down to a manageable list, we first looked at reviews from dedicated sites like vpnMentor and TorrentFreak, research and recommendations from noncommercial sources such as That One Privacy Site and privacytools.io, and user experiences and tips on various subreddits and technology-focused websites like Lifehacker and Ars Technica. We settled on 32 VPNs that were repeatedly recommended. From there, we dug into the details of how each one handled issues from technology to subscriptions:
The first step to security is usually a firewall between the client and the host server, requiring the remote user to establish an authenticated connection with the firewall. Encryption is also an important component of a secure VPN. Encryption works by having all data sent from one computer encrypted in such a way that only the computer it is sending to can decrypt the data.
The VPN client communicates over the public Internet and sends the computer’s network traffic through the encrypted connection to the VPN server. The encryption provides a secure connection, which means the business’s competitors can’t snoop on the connection and see sensitive business information. Depending on the VPN, all the computer’s network traffic may be sent over the VPN – or only some of it may (generally, however, all network traffic goes through the VPN). If all web browsing traffic is sent over the VPN, people between the VPN client and server can’t snoop on the web browsing traffic. This provides protection when using public Wi-Fi networks and allows users to access geographically-restricted services – for example, the employee could bypass Internet censorship if they’re working from a country that censors the web. To the websites the employee accesses through the VPN, the web browsing traffic would appear to be coming from the VPN server.
If you’re going to use torrents, however, life is easier if you use a VPN—especially if the network you’re on blocks torrenting. There are many VPNs among our top picks that could be used for downloading torrents, but our preferred choice is Private Internet Access. This no-frills VPN has an absolute ton of servers, good speeds, and a nice amount of country locations to remain relatively anonymous. (Read our full review.) The price is right at less than $40 a year, and its privacy policies have been tested in court. Plus, advanced users can adjust their level of encryption for data encryption, data authentication, and handshake.
Some virtual networks use tunneling protocols without encryption for protecting the privacy of data. While VPNs often do provide security, an unencrypted overlay network does not neatly fit within the secure or trusted categorization.[citation needed] For example, a tunnel set up between two hosts with Generic Routing Encapsulation (GRE) is a virtual private network, but neither secure nor trusted.[24][25]
Some hit streaming sites like Netflix, BBC iPlayer, and Amazon Prime impose geo-restrictions (Read complete guide on vpn for amazon prime), which limit users from other countries to access streams. Connecting to a secure VPN in a supported country gives you access to these geo-restricted platforms. Subsequently, you can enjoy watching your favorite TV shows/movies, minus the hassle.

It is possible for some background services to send information across that initial, unsecured connection before the VPN loads. To be fair, the risk is relatively minor for most usage profiles. If you're establishing a connection automatically to your corporate server, you will definitely want to check with your IT team about how they want you to set things up.
While you're connected to a VPN, all your network traffic passes through this protected tunnel, and no one—not even your ISP—can see your traffic until it exits the tunnel from the VPN server and enters the public internet. If you make sure to only connect to websites secured with HTTPS, your data will continue to be encrypted even after it leaves the VPN.
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