Free Wi-Fi is everywhere travellers need it: airports, railway stations, cafes, hotels, malls. And every security expert will tell you the same thing: public Wi-Fi is the least trustworthy network you will ever use. The convenience is real, but so are the risks, from casual snooping to sophisticated attacks that can intercept your logins and sessions. The good news is that staying safe on public Wi-Fi does not require expertise, just a handful of habits and an understanding of what the actual dangers are. Here is how safe public Wi-Fi really is and how to use it wisely.

What are the real risks?

Three attacks matter in practice. The first is the evil twin: an attacker sets up a hotspot named “Airport_Free_WiFi” next to the genuine one, and victims who connect route all traffic through the attacker’s machine. The second is packet sniffing on unencrypted networks: on open Wi-Fi without a password, anyone nearby with free software can read unencrypted traffic, which still includes more than people assume. The third is session hijacking and man-in-the-middle attacks, intercepting your connection to inject malicious content or steal session cookies that keep you logged in. The reassuring counterweight is HTTPS: most websites and apps now encrypt traffic end-to-end, which defeats casual sniffing. The remaining risk concentrates on the margins, unencrypted sites, DNS manipulation, and fake hotspots that serve phishing pages.

How safe is it, honestly?

Safer than its reputation, riskier than home Wi-Fi. A decade ago, public Wi-Fi snooping was trivially easy because much web traffic was unencrypted; today, with HTTPS nearly universal and apps using certificate pinning, the casual attacker sees mostly gibberish. Security researchers consider the realistic threat model to be targeted attacks and fake hotspots rather than mass surveillance at the coffee shop. That said, “mostly safe” is not “safe”: banking and work credentials deserve better than hope, determined attackers still operate, and in some countries state-level interception is a genuine concern. Treat public Wi-Fi like a public conversation: fine for ordinary topics, never for secrets.

Essential safety habits

A short list covers nearly all the risk.

• Verify the network name with staff before connecting; never join an open hotspot on name alone.
• Prefer networks that require a password or OTP login over fully open ones, and use mobile data for anything sensitive.
• Keep your device’s software updated; many Wi-Fi attacks exploit old vulnerabilities that patches already fixed.
• Turn off auto-connect to open networks and disable file sharing, AirDrop contacts-only, and network discovery while travelling.
• Use a reputable VPN on public Wi-Fi; it encrypts all your traffic into a tunnel the local network cannot inspect.
• Stick to HTTPS sites and apps, and never ignore a certificate warning, which signals possible interception.
• Log out of sensitive accounts when done, and avoid online banking on public Wi-Fi unless through your bank’s app with mobile data.

Should you use a VPN?

A VPN is the single most effective public Wi-Fi defence for ordinary users. It wraps all your traffic in encryption between your device and the VPN server, so the café hotspot, the hotel network, or anyone snooping on it sees only an encrypted stream. Choose a reputable paid VPN provider with a no-logs policy and apps for your devices; free VPNs often monetise through the very data collection you are trying to avoid. Turn it on before joining the network, not after. Understand its limits: a VPN does not protect you from phishing, malware or fake websites, and your traffic is visible to the VPN provider instead. For travellers, journalists and anyone handling sensitive work, it is essential; for casual browsing, it is cheap insurance.

Hotel and airport specifics

Hotels deserve special mention: their networks are complex, shared by hundreds of guests, and historically targeted by sophisticated attackers, including state-linked groups. Treat hotel Wi-Fi as hostile: VPN always on, sensitive work on mobile data. Airports in India increasingly offer official Wi-Fi with OTP verification, which is safer than random open hotspots but still public. Railway station Wi-Fi under government schemes follows the same logic. One underused alternative: your phone’s hotspot. Mobile data is encrypted over the air and far harder to intercept than Wi-Fi; for banking or work email, five minutes of hotspot use beats any public network.

FAQs

Can someone steal my passwords on public Wi-Fi? On modern HTTPS sites, not by passive sniffing. But fake hotspots serving phishing login pages absolutely can, which is why verifying the network and watching for certificate warnings matters.

Is my office VPN enough? Yes, if your employer provides one, it protects traffic the same way a commercial VPN does. Use it on all untrusted networks.

Should I do banking on airport Wi-Fi? Prefer mobile data or a VPN. Banking apps use strong encryption, but the stakes justify the extra caution.

Public Wi-Fi is a calculated risk, not a forbidden one. Verify the network, keep software updated, use a VPN, save secrets for mobile data, and the free internet at the airport becomes what it should be: a convenience, not a gamble.

Compiled by the Khabar 24h Editorial Desk from publicly available sources.