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A Wider View on TunnelVision and VPN Advice
If you listen to any podcast long enough, you will almost certainly hear an advertisement for a Virtual Private Network (VPN). These advertisements usually assert that a VPN is the only tool you need to stop cyber criminals, malware, government surveillance, and online tracking. But these advertisements vastly oversell the benefits of VPNs. The reality is that VPNs are mainly useful for one thing: routing your network connection through a different network. Many people, including EFF, thought that VPNs were also a useful tool for encrypting your traffic in the scenario that you didn’t trust the network you were on, such as at a coffee shop, university, or hacker conference. But new research from Leviathan Security demonstrates a reminder that this may not be the case and highlights the limited use-cases for VPNs.TunnelVision is a recently published attack method that can allow an attacker on a local network to force internet traffic to bypass your VPN and route traffic over an attacker-controlled channel instead. This allows the attacker to see any unencrypted traffic (such as what websites you are visiting). Traditionally, corporations deploy VPNs for employees to access private company sites from other networks. Today, many people use a VPN in situations where they don't trust their local network. But the TunnelVision exploit makes it clear that using an untrusted network is not always an appropriate threat model for VPNs because they will not always protect you if you can't trust your local network.
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A Wider View on TunnelVision and VPN Advice
If you listen to any podcast long enough, you will almost certainly hear an advertisement for a Virtual Private Network (VPN). These advertisements usually assert that a VPN is the only tool you need to stop cyber criminals, malware, government surveillance, and online tracking. But these...