Public Wi-Fi: Use It Carefully When Working Away From the Office

Working from a cafe, airport, hotel, customer site, or shared office can be convenient. Public Wi-Fi can help you send email, join meetings, check documents, and keep work moving when you are away from the office.

But public Wi-Fi should be treated differently from your office network or your home network. You usually do not know who manages it, how well it is secured, or whether another network nearby is pretending to be the real one.

The goal is not to panic or avoid working outside the office. The goal is to use public Wi-Fi with a few sensible habits.

Why public Wi-Fi needs caution

A public Wi-Fi network may be open to anyone nearby. In some places, criminals create lookalike network names such as “Free Airport WiFi” or a version of a cafe name to trick people into connecting.

If staff use the wrong network, or use public Wi-Fi without proper protection, it can increase the risk of exposing:

email logins
Microsoft 365 or Google Workspace sessions
banking and supplier portals
customer files
accounting systems
remote access tools
private messages and attachments

Most modern websites use encryption, which helps. But that does not make every public network safe. Staff still need to choose the right network, avoid risky prompts, and use company-approved protection.

Before you connect

Take a few seconds before joining a public network.

Do:

Confirm the correct Wi-Fi name with staff, signage, or the venue’s official information.
Prefer your phone’s mobile hotspot for sensitive work when practical.
Use your company-approved VPN or secure remote access tool if your business provides one.
Keep your laptop and phone updated before you travel.
Use multi-factor authentication on work accounts.
Make sure important sites show a secure connection in the browser.

Do not:

Join a random “free Wi-Fi” network just because the signal is strong.
Ignore certificate or browser security warnings.
Install software, certificates, browser extensions, or “Wi-Fi helper” tools just to get online.
Log into banking, payroll, accounting, or admin portals unless the connection is trusted and protected.
Leave file sharing or automatic discovery enabled on a device used in public spaces.

If you connect and the network asks for unusual permissions, a download, or a login that does not make sense, stop and use mobile data instead.

Safer habits while working away

When working outside the office, keep the session simple.

Open only the systems you need. Avoid sensitive admin work if it can wait. Do not handle payroll, banking changes, supplier payment changes, or password resets from an unknown network unless you have no safer option and your company’s secure access method is active.

Be especially careful with email links while on public Wi-Fi. If a message says you must sign in again, open the service from a bookmark or type the address yourself instead of clicking the link.

Also watch your surroundings. Public Wi-Fi risk is not only technical. Someone nearby may be able to see your screen, hear a call, or notice sensitive information on a document.

When mobile hotspot is better

A phone hotspot is often a better choice for short periods of sensitive work. It is not perfect, and it still needs a strong phone passcode and updated device, but it reduces the chance of connecting to a public or fake network.

Use a hotspot when you need to access:

bank accounts
payroll or HR systems
accounting platforms
password managers
administrator portals
confidential client documents
remote support tools

If mobile data is weak or unavailable, wait until you have a trusted connection where possible.

If you are unsure

If you are not sure whether a network is safe, do not guess.

Use mobile data, ask the venue to confirm the network name, or contact IT support. If you already connected and then saw a warning, strange login page, unexpected download, or unusual account prompt, disconnect and report it.

If you entered a password on a page that now seems suspicious, report it quickly. The right response may include changing the password, checking active sessions, reviewing recent account activity, and confirming MFA is still enabled.