VPN Server IPv6 Leak Prevention is a set of configuration choices that keep your internet traffic inside an encrypted tunnel when your devices also use the newer IPv6 addressing system. Many home and small office…
VPN server abuse prevention is the set of policies and technical controls that stop a virtual private network from being used for spam, fraud, scanning or other harmful activity. Operators who run VPN servers, whether…
SMS authentication limitations matter because many people still rely on a text message as their second step when signing in. Multi-factor authentication, or MFA, asks for a second proof of identity beyond a password, and…
Tor network observability describes how much of Tor’s activity can be seen by relay operators, network providers, and outside watchers, and what those observers can infer from it. Understanding this helps everyday readers set realistic…
SIM Swapping Risks are a growing concern for anyone who uses a phone number to receive login codes. A SIM card is the small chip that ties your mobile number to your carrier account. When…
Secure Password Transmission describes the set of protections that keep your password private while it moves from your device to a website or app. Every time you sign in, your password has to travel across…
VPN key management is the set of practices that controls how the cryptographic keys behind a virtual private network are created, stored, shared, rotated, and retired. Every secure tunnel depends on keys to prove identity…
VPN Server DNS Leak Prevention is the set of configuration choices that keep every domain name lookup travelling through your encrypted tunnel instead of leaking to your internet provider. Domain Name System, or DNS, is…
VPN server geographic restrictions are limits that a VPN provider or a website places on which locations a connection can use, and they shape what a reader can reach online. Many people encounter them without…
Clock Drift and TOTP describes a common login problem: an authenticator app produces a six-digit code that a website refuses, even though the code looks correct. The cause is often a small disagreement about the…