Mobile devices have become the frontline of business operations — emails, banking apps, client communications, and sensitive data are all now stored in the palm of your hand. But for many SMEs, mobile security is still an afterthought.

In this edition of Diary of an SME, we explore the most common risks facing business owners and their teams, including public Wi-Fi vulnerabilities, SIM-swap fraud, and overlooked device settings that can expose sensitive business data.

We break down three practical steps every SME can take immediately to improve mobile security: avoiding unsecured public networks, strengthening device-level protections, and enabling SIM PIN security to prevent unauthorised access if a phone is stolen.

The discussion also highlights wider cybersecurity blind spots — from compromised saved passwords to messaging app vulnerabilities and the limitations of relying solely on VPNs or encryption. The key message is clear: modern mobile security requires layered protection, not assumptions.

This is a practical guide for SME owners who rely on mobile devices daily and want to reduce risk without overcomplicating their tech stack.