How VPNs Actually Protect You (And When They Don't)
VPN ads tend to promise total anonymity online. That's not what a VPN does, and believing it is what gets people into trouble.
The decode
A VPN encrypts the connection between your device and the VPN server, and hides your real IP address from whatever network you're connected to — your home ISP, an airport's public Wi-Fi, or a hotel router. That's genuinely useful: it stops your internet provider from seeing which sites you visit, and it protects you on networks you don't control or trust.
The catch
A VPN doesn't hide you from the sites you actually log into. Google, Facebook, and your bank all still know it's you the moment you sign in — a VPN only hides the network path, not your identity once you've identified yourself. It doesn't stop browser fingerprinting or cookie-based tracking either. It won't protect you from a phishing email or a malicious download. And it's only as trustworthy as the company running it — a VPN with a bad or unaudited logging policy just moves who's watching you, rather than removing the watcher.
The bottom line: A VPN protects one specific thing — your traffic on the network you're connected to — not your identity everywhere you go online.
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