Ransomware isn’t a jump scare. It’s a slow build.

In many cases, it begins days, or even weeks, before encryption, with something mundane, like a login that never should have succeeded.

That’s why an effective ransomware defence plan is about more than deploying anti-malware. It’s about preventing unauthorised access from gaining traction.

Here’s a five-step approach you can implement across your small-business environment without turning security into a daily obstacle course.

Most small businesses aren’t falling short because they don’t care. They’re falling short because they didn’t build their security strategy as one coordinated system. They added tools over time to solve immediate problems, a new threat here, a client request there.

On paper, that can look like strong coverage. In reality, it often creates a patchwork of products that don’t fully work together. Some areas overlap. Others get overlooked.

And when security isn’t intentionally designed as a system, the weaknesses don’t show up during routine support tickets. They show up when something slips through and turns into a disruptive, expensive problem.

You invested in a great firewall, trained your team on phishing, and now you feel secure. But what about your accounting firm’s security? Your cloud hosting provider? The SaaS tool your marketing team loves? Each vendor is a digital door into your business. If they leave it unlocked, you are also vulnerable. This is the supply chain cybersecurity trap.

Sophisticated hackers know it is easier to breach a small, less-secure vendor than a fortified big corporate target. They know that they can use that vendor’s trusted access as a springboard into your network. Major breaches, like the infamous SolarWinds attack, proved that supply chain vulnerabilities can have catastrophic ripple effects. Your defenses are irrelevant if the attack comes through a partner you trust.

This third-party cyber risk is a major blind spot, and while you may have vetted a company’s service, have you vetted their security practices? Their employee training? Their incident response plan? Assuming safety is a dangerous gamble.

For years, enabling Multi-Factor Authentication (MFA) has been a cornerstone of account and device security. While MFA remains essential, the threat landscape has evolved, making some older methods less effective.

The most common form of MFA, four- or six-digit codes sent via SMS, is convenient and familiar, and it’s certainly better than relying on passwords alone. However, SMS is an outdated technology, and cybercriminals have developed reliable ways to bypass it. For organisations handling sensitive data, SMS-based MFA is no longer sufficient. It’s time to adopt the next generation of phishing-resistant MFA to stay ahead of today’s attackers.

SMS was never intended to serve as a secure authentication channel. Its reliance on cellular networks exposes it to security flaws, particularly in telecommunication protocols such as Signaling System No. 7 (SS7), used for communication between networks.

Attackers know that many businesses still use SMS for MFA, which makes them appealing targets. For instance, hackers can exploit SS7 vulnerabilities to intercept text messages without touching your phone. Techniques such as eavesdropping, message redirection, and message injection can be carried out within the carrier network or during over-the-air transmission.

SMS codes are also vulnerable to phishing. If a user enters their username, password, and SMS code on a fake login page, attackers can capture all three in real time and immediately gain access the legitimate account.

The modern office extends far beyond traditional cubicles or open-plan spaces. Since the concept of remote work became popularised in the COVID and post-COVID era, employees now find themselves working from their homes, libraries, bustling coffee shops, and even vacation destinations. These environments, often called “third places,” offer flexibility and convenience but can also introduce risks to company IT systems.

With remote work now a permanent reality, businesses must adapt their security policies accordingly. A coffee shop cannot be treated like a secure office, as its open environment exposes different types of threats. Employees need clear guidance on how to stay safe and protect company data.

Neglecting security on public Wi-Fi can have serious consequences, as hackers often target these locations to exploit remote workers. Equip your team with the right knowledge and tools, and enforce a robust external network security policy to keep company data safe.