- ✓Public Wi-Fi is riskier than your home network, but modern HTTPS has made casual snooping much harder.
- ✓The real dangers today are rogue “evil-twin” hotspots, unencrypted apps, and what your connection leaks (the sites you visit).
- ✓Simple habits — verify the network, avoid sensitive logins, keep software updated — cut most of the risk.
- ✓A VPN adds a strong layer by encrypting everything, including on a hostile hotspot.
- ✓A VPN isn’t magic: it doesn’t stop malware or phishing, so it’s one layer, not the whole defence.
The short answer
Public Wi-Fi is riskier than your home network, but far safer than it used to be. A decade ago, sitting on café Wi-Fi could expose passwords in plain text. Today, almost every serious website uses HTTPS encryption, which scrambles the contents of your traffic — so the old “anyone can steal your password” warnings are largely out of date.
That doesn’t make it risk-free. The dangers have simply moved: fake hotspots, apps that don’t encrypt properly, and the fact that a network can often still see which sites you visit even if it can’t read them. The honest verdict: fine for casual browsing, worth being careful with anything sensitive — and a good place for a VPN to do real work.
Treat public Wi-Fi as a network you don’t control. HTTPS handles a lot; sensible habits and a VPN handle the rest.
The real risks in 2026
Forget the outdated hysteria — here’s what actually matters now:
What HTTPS already protects (and what it doesn’t)
It’s worth being clear, because it’s the reason we won’t scare you. The padlock in your browser means HTTPS is active, and the contents of your session — passwords, messages, card details — are encrypted between you and the site, even on open Wi-Fi. That’s genuine, strong protection, and it covers most of what people worry about.
What HTTPS doesn’t hide is the metadata: the network can usually still see which websites and services you connect to, via DNS lookups and connection details. It also can’t help with apps that are poorly built, or protect you if you’ve connected to an outright malicious hotspot. That gap is exactly what a VPN closes.
How to stay safe on public Wi-Fi
Most of your protection comes from a few simple habits — VPN or not:
- Check the exact network name with staff — don’t guess between similar-looking ones.
- Prefer networks with a password (WPA2/WPA3) over fully open ones.
- Look for the padlock (HTTPS) before entering anything, and avoid sensitive logins on untrusted Wi-Fi.
- Turn off auto-connect and file/AirDrop sharing so your device doesn’t join or expose itself automatically.
- Keep your OS, browser and apps updated — most real-world attacks exploit old software.
- For anything sensitive, use your mobile data or a personal hotspot instead — or a VPN.
Where a VPN genuinely helps
This is the one case where a VPN’s value is easy to state plainly. On an untrusted network it:
- +Encrypt all your traffic, not just HTTPS sites
- +Hide which sites you visit from the network
- +Protect you even on a rogue or “evil-twin” hotspot
- +Cover apps and devices that don’t encrypt well on their own
- −Stop malware or dodgy downloads
- −Protect you from phishing or fake login pages
- −Fix an out-of-date, vulnerable device
- −Replace basic caution and common sense
In short, a VPN is the single best tool for public Wi-Fi specifically — it turns “a network I don’t trust” into an encrypted tunnel — but it’s one layer alongside good habits, not a substitute for them. If you’re still deciding whether it’s worth it, see do I need a VPN.
Café, airport and transport Wi-Fi in Ireland
The same rules apply wherever you connect — cafés, hotels, Dublin Airport, and the Wi-Fi on Irish Rail, Dublin Bus and the Luas. All are fine for casual browsing, and all are networks you don’t control, so treat them the same way: verify the name, keep sensitive tasks for trusted connections or mobile data, and switch on a VPN when you need privacy. It’s also handy for keeping your usual services working while you’re out and about — including an Irish IP when you travel.
See the full ranking in our best VPN for public Wi-Fi and best VPN for travel guides.