VPN cascading – or double VPN – is the process of using a VPN program to create a secure and encrypted connection within another VPN connection. This type of connection is used for situations where extreme security is needed. With this method, all data is protected with an extra layer of encryption, meaning that it will be twice as hard for hackers to decipher it. In addition, using a double VPN will increase the security level of your online activities, as multiple encryption will be applied. It benefits those who need a high level of online security and privacy as the second server doesn’t have any information about you, because the first VPN server has already switched your actual IP address.
It is common for journalists or political activists to rely on VPN cascading as a way to avoid government surveillance or to protect their sources. However, despite it being an extra layer of security, it is unnecessary when it comes to private browsing. Furthermore, if you’re looking for maximum speed while browsing, using a double VPN isn’t recommendable, as VPNs are known to slow down connection speed. Users browsing the TOR network won’t need to use VPN cascading either. In those cases, using a single VPN will do the trick.
Because it is often used for illegal activities, few VPN services like NordVPN and Perfect Privacy support VPN cascading. Both of these providers have a double VPN feature at no extra cost for users. NordVPN applies AES-256-CBC twice, thus guaranteeing extra protection. However, that is no match for Perfect Privacy, that connects through not two, but four different servers, making it virtually impossible for third parties to access any data.
In short, VPN cascading is only recommendable for those who are dealing with high-risk information or who are looking to avoid being surveilled at any cost.
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