Privacy › Module 3 › Lesson 3
Safe Public WiFi Usage
Stay safer on coffee-shop, airport, and hotel Wi-Fi networks
Opening
Free Wi-Fi is a shared room, not a private office
Public networks at cafés, airports, and hotels are easy targets for eavesdropping and fake hotspots. You do not need to avoid them entirely—you need habits that limit what attackers on the same network can see or do.
1. Common Public Wi-Fi Risks
Evil twin hotspots
Attackers broadcast names like Free_Airport_WiFi to capture traffic or show fake login pages.
Unencrypted local traffic
Without HTTPS or a VPN, others on the LAN may read metadata or manipulate unprotected sessions.
Captive portal tricks
Fake portals ask for email or card details. Verify network name with staff before connecting.
2. Safe Habits on Open Networks
Confirm the official network name with an employee. Prefer HTTPS sites only—modern browsers warn on insecure pages. Use a VPN on untrusted Wi-Fi for banking or work email. Disable auto-join for open networks on phones so you do not silently connect to rogue access points. Turn off file sharing and AirDrop/receive-from-everyone settings on laptops while traveling.
3. What to Avoid
Sensitive logins without protection
Skip banking or admin panels unless VPN or known-good HTTPS is active.
Installing “Wi-Fi booster” profiles
Random configuration profiles may install trusted certificates that enable interception.
Ignoring certificate warnings
If the browser warns about TLS, stop—do not click through on public networks.
Use your phone as a hotspot when in doubt
Cellular data with tethering is often safer than unknown Wi-Fi for quick sensitive tasks.
Knowledge Check
An evil twin attack involves:
Multiple choice
Knowledge Check
On public Wi-Fi, a VPN helps by:
Multiple choice
Knowledge Check
True or False: You should verify the official Wi-Fi network name with staff before connecting.
True or False