A VPN is the ultimate tool for protecting your internet security and privacy. A VPN does this by creating a secure encrypted tunnel through which your data is routed through the VPN servers to its destination. With strong, unbreakable encryption, your internet traffic won’t be visible to prying eyes. And even if they manage to intercept it, it won’t be of much use as they still need a decryption key to gain access to your data of which they don’t have.
Besides encryptions, when using a VPN, your actual IP address is replaced with a virtual IP address of the server you select. When you access the internet, the web servers and other internet services will only see your virtual IP address and a virtual location. Your real IP address and your actual location won’t be known.
如何才能做到脆弱？
即使使用了 VPN，你可能还是会发现自己的隐私和安全根本得不到保护。让我们来看看，即使使用了 VPN，你也可能受到网络安全和隐私威胁；
- 您的设备/系统受到威胁
Your VPN connection will still work normally even if your device is compromised. This means that a VPN will carry out the encryption and its other functions without caring about your underlying problem.
For instance, if your device has malware or you fell for some phishing scam, cybercriminals can gain access to your data even if you have your VPN on. This is because they already have access to your device and using the strongest VPN encryption won’t help you. In this case, always be cyber-aware, use strong, unique passwords, and update your antivirus/antimalware regularly. Also, avoid bad internet behavior.
- 访问恶意网站
If you visit an unsecured site or a malicious website, a VPN will still protect your internet traffic from being accessible to prying eyes. What a VPN won’t protect it you against are dangers that come from visiting a malicious site. That’s, a VPN will protect your compromised internet traffic.
再次强调，除非 VPN 具有其他功能（如阻止恶意软件），否则应避免访问不安全的网站，即使在使用 VPN 时也要保持良好的网络安全行为。
- 加密功能弱
This is one of the major factors that make you vulnerable when using a VPN. Cybercriminals such as hackers know to penetrate systems and are relentless in doing so. When you use weak encryption, hackers will try and crack the encryption protocol to get access to your data and other sensitive information.
Most VPNs offer secure encryptions protocols, but still, there are some weaker protocols such as PPTP. This protocol gives you speed but compromises your security.
要解决加密薄弱的问题，一定要选择提供军用级加密的 VPN，如 AES 256 位加密标准、256 位 OpenVPN 加密、IKEv2 和 IPSec。这些协议具有强大的加密功能，还能提供上网所需的速度。
- VPN 服务相关问题
Subscribing to a VPN service means you are placing all your trust in the VPN service to protect you against internet security threats and privacy intrusions. Sometimes it’s not the case especially when the VPN service is not reliable. For instance, if you connect to an unsecured VPN server, your internet traffic will be compromised, and you will no longer be secure and private. It’s even worse if the VPN server keeps logs.
Another VPN service problem would be unreliable connections. If your connection to the VPN server keeps dropping every time and there’s no kill switch, eventually your internet traffic will leak to the open internet and be accessible by prying eyes.
