A VPN creates an encrypted tunnel between devices and a remote network, making its configuration and flaws important to privacy and access control.
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Background for this topic.
VPN (virtual private network) creates an encrypted tunnel between a device and a VPN gateway, or between networks, across an untrusted network such as the internet. It is commonly used for remote access and site-to-site connectivity. Encryption protects traffic in transit between the tunnel endpoints, but it does not secure a compromised device, protect data after it reaches the destination, or automatically make the VPN provider trustworthy; logging and traffic visibility depend on its configuration and operator.
VPN gateways are high-value entry points: vulnerabilities in internet-facing appliances, weak protocols or configurations, and stolen credentials can enable unauthorized access to internal systems. Organizations should patch and securely configure gateways, require phishing-resistant or otherwise strong multi-factor authentication where practical, restrict access and segment remote sessions, and monitor authentication and connection logs. During an incident, VPN account and gateway records can help identify access, while compromised gateways may require credential resets and network-wide review.
Tainted VPN installers are being used to deliver a piece of surveillanceware dubbed EyeSpy as part of a malware campaign that started in May 2022
A zero-day vulnerability in FortiOS SSL-VPN that Fortinet addressed last month was exploited by unknown actors in attacks targeting the government and other large organizations
Fortinet says unknown attackers exploited a FortiOS SSL-VPN zero-day vulnerability patched last month in attacks against government organizations and government-related targets. [...]
Cisco warned customers today of a critical authentication bypass vulnerability with public exploit code affecting multiple end-of-life (EoL) VPN routers. [...]