Remote Work Security: How to Protect Your Business When Employees Work From Anywhere

Remote and hybrid work is now the default for most knowledge workers. According to recent surveys, more than 60% of San Antonio office workers now work remotely at least part of the time. That's a permanent shift — and it has fundamentally changed the IT security landscape.

The traditional security model assumed employees were in the office, on the corporate network, using corporate devices. Remote work breaks all three assumptions. Employees are at home, at coffee shops, at client sites — on home networks, public WiFi, and personal devices.

Here's how to secure a distributed workforce without creating so much friction that employees work around your controls.

The Remote Work Security Threat Landscape

Remote work creates several specific security risks:

Home networks are not corporate networks. Home routers are often running default credentials and outdated firmware. Home networks may include IoT devices with known vulnerabilities. Family members may be sharing the network. There's no corporate firewall inspecting traffic.

Personal devices may be used for work. Even if you have a policy against it, employees use personal devices for work — checking email on a personal phone, accessing a shared document on a personal laptop. Personal devices typically lack corporate security controls.

Public WiFi is a real risk. Coffee shop WiFi, hotel WiFi, and airport WiFi are untrusted networks. Traffic on these networks can be intercepted. Attackers set up fake WiFi hotspots ("evil twin" attacks) to capture credentials.

Phishing attacks are more effective against remote workers. Remote workers can't walk down the hall to verify a suspicious request. They're more likely to be working outside normal hours when judgment is impaired. They're more likely to be using personal devices with less security.

The Remote Work Security Stack

Secure Remote Access

VPN (traditional approach): A VPN creates an encrypted tunnel between the employee's device and your corporate network. All traffic is routed through the corporate network, where it can be inspected and filtered. VPNs are well-understood and widely deployed, but they have limitations: they give remote workers full network access (increasing blast radius if a device is compromised), and they can create performance issues for cloud-based applications.

Zero Trust Network Access (modern approach): ZTNA provides access to specific applications rather than the entire network. Every access request is verified based on identity, device health, and context. ZTNA provides better security than VPN and better performance for cloud applications. Solutions like Microsoft Entra Private Access, Cloudflare Access, and Zscaler Private Access are increasingly accessible for SMBs.

Endpoint Security for Remote Devices

Every device that accesses corporate data needs endpoint security — regardless of whether it's corporate-owned or personal.

Corporate devices: Deploy EDR, enforce disk encryption, require current OS and patches, manage through MDM.

Personal devices (BYOD): This is harder. At minimum, require MDM enrollment for access to corporate email and data. Consider a containerization approach that keeps corporate data in a managed container separate from personal data.

Multi-Factor Authentication

MFA is essential for remote work. Every system that remote workers access — email, VPN, cloud applications, internal applications — should require MFA. Prioritize phishing-resistant MFA (hardware keys, passkeys) for high-value accounts.

DNS Filtering

DNS filtering works on any network — home, coffee shop, or corporate. When a remote worker's device makes a DNS query, the filtering service checks it against a threat intelligence database and blocks malicious domains. This stops malware communication and phishing sites regardless of what network the employee is on.

Cloudflare Gateway and Cisco Umbrella both offer DNS filtering that works on remote devices.

Encrypted Communication

All communication of sensitive information should be encrypted:

• Email encryption for sensitive communications (Microsoft Purview Message Encryption, ProtonMail)

• Encrypted messaging for internal communication (Teams, Slack with enterprise security)

• Encrypted file sharing (SharePoint, OneDrive with appropriate permissions)

Policies and Procedures for Remote Work

Technology alone isn't sufficient. You also need clear policies:

Acceptable use policy: What can employees do on corporate devices? Can they use personal devices for work? What data can be accessed from personal devices?

Home network security requirements: Should employees be required to use a VPN even on their home network? Should they be required to use a separate network for work devices?

Incident reporting: How should employees report a lost or stolen device? What should they do if they think they've been phished?

Clean desk policy: Even at home, employees should lock their screens when stepping away and be mindful of who can see their screens.

The Productivity Balance

Security controls that are too burdensome get worked around. If your VPN is slow and unreliable, employees will disable it. If MFA is too cumbersome, employees will share accounts to avoid it.

The goal is security controls that are effective but not obstructive. Modern ZTNA solutions, well-configured MFA, and DNS filtering that runs transparently in the background provide strong security with minimal friction.

If you want to assess your remote work security posture and identify gaps, book a free IT assessment with our team. We work with remote and hybrid teams across San Antonio and can help you find the right balance of security and productivity.