Privacy › Module 3 › Lesson 2
VPN — What It Does & Doesn't Do
Understand what VPNs do, what they do not do, and when they help your privacy
Opening
A VPN is not magic invisibility
Virtual Private Networks encrypt traffic between your device and a VPN provider's server. Your ISP or coffee-shop Wi-Fi sees a connection to the VPN—not the specific sites inside the tunnel. But the VPN provider can see your traffic unless sites use HTTPS, and you are still logged into accounts that identify you.
1. What a VPN Does
Encrypts the path to the VPN server
Protects data on untrusted networks from local eavesdroppers on the same Wi-Fi.
Hides browsing from local network
The café router sees VPN traffic, not individual domain names (depending on protocol and DNS setup).
Changes apparent IP location
Websites see the VPN server's IP. Useful for region restrictions—not a guarantee of anonymity.
2. What a VPN Does Not Do
A VPN does not make you anonymous by itself. Logged-in accounts, cookies, and browser fingerprinting still identify you. It does not replace antivirus, password managers, or 2FA. Free VPNs may log and sell data—if the product is free, you may be the product. HTTPS still matters: end-to-end encryption is between you and the website, inside or outside a VPN.
3. Choosing a Reputable VPN
Clear no-logs policy
Published audits or court cases that support their claims are stronger than marketing alone.
Modern protocols
WireGuard or OpenVPN with strong encryption—not outdated PPTP.
Kill switch
Blocks traffic if the VPN drops so data does not leak on the open network.
Paid, transparent business
Avoid unknown free apps with excessive permissions on mobile.
VPN + HTTPS, not VPN instead of HTTPS
Always look for the padlock on sensitive sites. VPN protects the local link; HTTPS protects content to the server.
Knowledge Check
A VPN primarily encrypts traffic between:
Multiple choice
Knowledge Check
Which statement about VPNs is correct?
Multiple choice
Knowledge Check
True or False: A VPN kill switch helps prevent data leaks if the VPN connection drops.
True or False