Is public Wi-Fi safe? How to use it without getting hacked
Public Wi-Fi is not as dangerous as it used to be - but it is not risk-free. Here is what actually matters and what to do.
Is public Wi-Fi actually dangerous?
Less than it used to be. Today almost every serious website uses HTTPS, which encrypts the connection between your device and the site - so the person at the next table cannot simply read your banking session. But public Wi-Fi still carries real risks worth knowing.
The real risks
- Fake hotspots. A scammer sets up a network named "Airport_Free_WiFi" or "Starbucks Guest." Connect to it and they sit between you and the internet.
- Sites without HTTPS. On the rare site still using plain
http, anything you type can be read on an open network. Look for the padlock andhttps. - Auto-connect. Your phone rejoining a saved open network without asking - including a fake one with a familiar name.
- Shoulder surfing. The low-tech classic: someone watching your screen or keyboard.
How to use public Wi-Fi safely
- Confirm the real network name with staff before connecting. Avoid networks that ask for too much personal info to join.
- Stick to HTTPS. Look for the padlock. You can confirm a site's certificate with our TLS / HTTPS Checker.
- Use a VPN on networks you do not trust - it encrypts all your traffic, not just web pages. See reputable options on our Safe Software page.
- Turn off auto-connect to open networks, and "forget" them when you leave.
- Avoid sensitive tasks - banking, shopping - unless you are on a network you trust or your own mobile data.
- Use your phone's hotspot instead when in doubt; cellular data is generally safer than open Wi-Fi.
The bottom line
You do not need to fear public Wi-Fi, but treat it like a public space: stick to encrypted sites, use a VPN for anything sensitive, and when in doubt, use your own mobile data.