The Myth of HTTPS Protection
You've heard that HTTPS protects you on public WiFi. It's partially true — HTTPS encrypts the content of your communications. But it doesn't hide:
- **Which websites you visit** — DNS queries and SNI headers reveal every domain
- **Connection metadata** — When you connected, how long, how much data
- **Your device identity** — MAC address, hostname, OS fingerprint
- **Network topology** — Your local IP, which services you're running
Real Attack Scenarios
Evil Twin Attack
An attacker creates a WiFi network with the same name as the legitimate one. Your device connects automatically. All your traffic routes through the attacker's hardware.
ARP Spoofing
On a shared network, an attacker poisons the ARP cache to redirect your traffic through their machine. Tools like Ettercap make this trivial.
SSL Stripping
The attacker downgrades HTTPS connections to HTTP before they reach your browser. Modern HSTS headers mitigate this, but not all sites implement HSTS correctly.
Credential Harvesting
Even with HTTPS, if you connect to a captive portal or click a link from the attacker, they can serve convincing phishing pages for your email, exchange, or work tools.
What a VPN Changes
With VynVPN active on public WiFi:
| Without VPN | With VynVPN |
|---|---|
| DNS queries visible | All DNS encrypted in tunnel |
| Websites visited visible (SNI) | Only VPN server IP visible |
| Vulnerable to ARP spoofing | Traffic encrypted before reaching local network |
| Captive portal phishing risk | Kill switch blocks until VPN is active |
| Device fingerprinting possible | Connection metadata hidden |
VynVPN's Auto-Connect Feature
VynVPN's desktop and mobile apps include automatic WiFi protection:
- Detects when you join an untrusted network
- Activates VPN before any other traffic is sent
- Kill switch blocks everything until tunnel is established
- You're protected before you even open your browser
The Simple Rule
If you didn't set up the network and you don't control the hardware, use a VPN. Always. No exceptions.