Securing remote work: A practical guide for the sudden shift to home offices

March 2020 changed how organizations work. Within weeks, millions of employees who had never worked from home were suddenly doing so full-time. Laptops left secure office networks and connected to home Wi-Fi. Kitchen tables became workstations. The organizational perimeter that IT had relied on for years essentially vanished. Here is what mattered most for security during that sudden transition, and what organizations should have done immediately.

The perimeter disappeared

For years, security strategies relied on a clear boundary: the office network was trusted, everything outside was not. When employees went home, that model broke. Home routers, shared family devices, and unsecured networks became the new edge. Organizations that adapted quickly treated every device and connection as potentially untrusted, regardless of location. Those that did not learned the hard way.

What to secure first

With limited time and resources, organizations needed to prioritize. The most critical steps were: ensuring all work devices had full-disk encryption enabled; requiring multi-factor authentication on every cloud application, especially email; verifying that VPNs were deployed and actually used; confirming that endpoint protection was installed and updating correctly; and establishing a clear channel for employees to report security questions or incidents from home. These five steps addressed the highest risks without requiring months of preparation.

Home network risks

Most home networks were never designed for organizational work. Default router passwords, outdated firmware, and shared access with family members created real risks. Organizations should have instructed employees to: change default router passwords; ensure router firmware was current; keep work devices on a separate network segment when possible; and avoid sharing work devices with family members. Even basic guidance reduced exposure significantly.

The human factor got bigger

Remote employees could not walk over to a colleague to verify an unusual request. They received more email because in-person communication stopped. They were stressed, distracted, and operating outside normal routines. These conditions made phishing more effective. Attackers knew this and adjusted their tactics. Organizations that reinforced security awareness training during the transition, even with a simple reminder email, saw better outcomes than those that assumed employees would adapt automatically.

Documentation still mattered

Even during a crisis, auditors, regulators, and insurance underwriters still asked for documentation. Organizations that quickly implemented a remote work security policy, delivered training on it, and recorded completion had something to show when asked. Those that treated the transition as temporary and undocumented faced questions later that they could not answer well. The organizations that handled this best treated remote work security as a formal program from day one.

What to communicate to employees

Clear, practical communication helped employees make better decisions. Organizations should have told their people: use only approved devices for work; lock screens when stepping away, even at home; be extra cautious with email requests for payments, credentials, or sensitive data; use the VPN for all work connections; and report anything suspicious immediately. Simple, direct guidance worked better than lengthy policy documents that no one read.