4 Tips Remote Workers Need to Protect Data in Public

Key Takeaways

• Public Wi-Fi without a password leaves your data vulnerable to theft or manipulation
• Rogue 'evil twin' networks can mimic legitimate Wi-Fi to intercept your traffic
• Mobile hotspots using your phone's cellular signal are more secure than public Wi-Fi

The Public Workspace Problem

For digital nomads, logging on from a cafe, co-working space, hotel lobby, or airport lounge is normal. Reliable high-speed internet made it possible. The pandemic made it mainstream. But working in public creates security risks that many remote workers ignore.

Some people work remotely because their company has no local office. Others lack a proper home setup. Whatever the reason, public spaces expose sensitive data to risks that don't exist in a controlled environment. Here are four ways to protect yourself.

1. Check Your Company's Remote Work Policy

Many companies have internal guidelines for working in public. Some offer privacy and confidentiality training. Others discourage working in crowded places like coffee shops because of data privacy risks.

The British government makes this explicit in its guidance for staff handling classified documents: "These environments can present additional risks, including being more freely accessible to people without the appropriate clearance and need-to-know."

If you travel for work, check whether your employer restricts working from certain countries. Some organizations have strict policies about geographic data access.

2. Control What Others Can See

Cafes and co-working spaces are busy. Most people mind their own business. But accidental exposure still happens. A glance at your screen from a passerby, a photo taken by someone nearby, or deliberate "shoulder surfing" can leak sensitive information.

• Sit with your back to a wall so no one can see your screen from behind
• Find secluded spots away from high-traffic areas
• Use a screen privacy filter. These thin films have tiny louvres that block viewing angles

Privacy filters cost $20 to $50 and make your screen appear dark or blank to anyone not directly in front of it. They're a simple fix for a common problem.

3. Avoid Public Wi-Fi

Free Wi-Fi in airports and hotels is tempting. Cybersecurity experts say don't use it.

The National Security Agency warns that public Wi-Fi networks without passwords leave data vulnerable to theft or manipulation. Even password-protected networks don't guarantee encryption.

One specific threat: rogue networks that mimic legitimate ones. The NSA calls these "evil twins." A malicious actor sets up a fake access point with a name that looks like the real hotel or airport Wi-Fi. Connect to it, and they can see everything you send.

“A malicious actor can set up a fake access point, also known as an evil twin, to mimic the nearby expected public Wi-Fi, resulting in that actor having access to all data sent over the network.”

— National Security Agency cybersecurity guidance

4. Use a Mobile Hotspot Instead

The NSA recommends mobile hotspots as a safer alternative. Your phone uses its cellular signal to create a small wireless network that only you control. Most iPhones and Android phones have this feature built in.

A mobile hotspot is more secure because the connection goes through your carrier's cellular network, not a shared public router. You set the password. You control who connects.

If your data plan is limited, check with your carrier about hotspot options. Many business plans include generous hotspot allowances. The small monthly cost beats the potential damage from a data breach.

The Bigger Picture

Remote work security isn't just about protecting yourself. A breach on your laptop can expose customer data, company secrets, or access credentials that affect the entire organization. The convenience of working from a coffee shop isn't worth the risk if you're handling sensitive information.

These four steps are basics, not a complete security strategy. But they address the most common risks of public workspaces. Follow them, and you eliminate the easiest attack vectors.

Frequently Asked Questions

Is public Wi-Fi safe if it requires a password?

No. The NSA says password-protected public Wi-Fi still may not encrypt your data. The password only controls access to the network, not the security of data sent over it.

What is an evil twin Wi-Fi attack?

An attacker creates a fake Wi-Fi network with a name that mimics a legitimate one, like "Airport_Free_WiFi." When you connect, they can intercept all data you send and receive.

How do I set up a mobile hotspot on my phone?

On iPhone, go to Settings > Personal Hotspot. On Android, go to Settings > Network & Internet > Hotspot & Tethering. Enable the hotspot and set a strong password.

Do screen privacy filters affect display quality?

They slightly reduce brightness and can add a faint tint when viewed head-on. Most users find the trade-off acceptable for the privacy benefit.

Source: Fast Company / Associated Press