10 Cyber Security Mistakes Small Businesses Make (And How to Avoid Them)

Many small business owners believe cyber criminals only target large organisations. Unfortunately, that’s far from the truth. Small businesses are often targeted because they typically have fewer security controls in place, making them an easier target.

The good news is that many cyber incidents are entirely preventable. Here are the ten most common cyber security mistakes we see and how your business can avoid them.

Using Weak Passwords

Passwords like “Password123” or “Company2026” remain surprisingly common.

Solution: Use strong, unique passwords and consider a password manager to securely store them.

Not Using Multi-Factor Authentication (MFA)

A password alone is no longer enough. If an attacker obtains credentials, they can often access business systems immediately.

Solution: Enable MFA on email accounts, Microsoft 365, CRM platforms, banking systems and any cloud services.

Sharing User Accounts

Using a shared login might seem convenient, but it makes accountability impossible and increases risk.

Solution: Every employee should have their own account and permissions.

Ignoring Software Updates

Outdated software often contains vulnerabilities that attackers actively exploit.

Solution: Regularly update operating systems, applications and security software.

No Backup Strategy

Many businesses only realise they need backups after data has been lost.

Solution: Implement automated backups and regularly test restoration procedures.

Allowing Everyone to Be an Administrator

Administrative privileges should be limited.

Solution: Apply the principle of least privilege and only grant elevated permissions when required.

Lack of Cyber Security Awareness Training

Employees remain one of the most common entry points for cyber attacks.

Solution: Provide regular awareness training covering phishing, passwords and safe data handling.

Not Securing Mobile Devices

Laptops and phones often contain sensitive company information.

Solution: Encrypt devices and use mobile device management solutions where appropriate.

Assuming Security Will Never Be a Problem

Cyber attacks affect businesses of every size and sector.

Solution: Take a proactive approach rather than waiting for an incident to occur.

No Incident Response Plan

When a breach happens, panic often leads to poor decisions.

Solution: Develop a simple incident response plan that outlines what to do, who to contact and how to minimise impact.

Final Thoughts

Cyber security doesn’t need to be complicated. By addressing these common mistakes, small businesses can significantly reduce their risk and improve resilience.

Need help assessing your cyber security posture? Contact AELT Tech, for a professional security review.