True North Accounting Blog

Simple cybersecurity tips to protect your small business

Written by Matt Peterson | Oct 16, 2026, 9:00:41 PM

Running a small business means managing many moving parts, from client relationships and payroll to invoices and day-to-day operations. Cybersecurity might not always be top of mind, but protecting your business information is an important part of keeping everything running smoothly.

You don't need a dedicated IT department to take cybersecurity seriously. A few practical habits can help reduce the risk of fraud, data breaches and disruptions to your business.

For example, a fraudulent email could convince you to send money to the wrong account. A compromised password could give someone access to your accounting software. And a ransomware attack could prevent you from accessing important business files.

The good news is that you can take steps to reduce these risks. Here's where to start.

 

 

Why cybersecurity matters for small businesses

Cybercriminals don't only target large corporations. Small businesses can be attractive targets because they handle money, store valuable information and may have fewer security measures in place.

A cyber incident can affect more than your technology. It can lead to financial losses, interrupt your operations, expose sensitive information and damage relationships with customers or suppliers.

Depending on the situation, your business could face:

  • Unauthorized access to business banking or accounting accounts
  • Fraudulent payments or changes to supplier banking details
  • Exposure of customer, employee or payroll information
  • Lost access to important files and systems
  • Business interruptions and recovery costs

Taking a few preventative steps now can help you avoid some of the cost and disruption that come with a security incident.

 

7 practical ways to protect your small business

You don't have to tackle everything at once. Start with these seven steps and build better security habits over time.

1. Use strong, unique passwords

Reusing passwords across multiple accounts can put your business at risk. If one account is compromised, other accounts using the same password could be vulnerable too.

Use a long, unique password for every business account. A password manager can help you generate and store passwords securely, so your team doesn't have to remember them all. Tools like LastPass or 1Password generate and store strong passwords securely.

Make sure your business email, accounting software, banking services and other important accounts have strong, unique passwords.

2. Turn on multi-factor authentication

Multi-factor authentication (MFA) adds another layer of protection when you sign in. Besides your password, you'll need to verify your identity using another method.

Enable MFA wherever it's available, especially for email, accounting software, banking and payroll platforms. An authenticator app or security key is generally preferable to a code sent by text message when those options are available.

MFA doesn't guarantee an account can't be compromised, but it makes stolen passwords less useful to attackers.

3. Watch for suspicious emails and messages

Phishing scams often look like legitimate messages from banks, suppliers, colleagues or software providers. They may ask you to click a link, open an attachment, share login details or make an urgent payment.

Before responding, look for warning signs such as:

  • Unexpected requests for money or sensitive information
  • Unusual sender addresses or links
  • Pressure to act immediately
  • Unexpected attachments or login requests
  • Changes to supplier payment instructions

If an email asks you to transfer money or update banking details, verify the request using a trusted phone number or contact method you already have on file. Don't rely on the contact information provided in the suspicious message.

4. Keep your software and devices up to date

Software updates often include security fixes that address known vulnerabilities. Delaying updates can leave your devices and business accounts exposed to avoidable risks.

Turn on automatic updates where appropriate, and keep computers, phones, browsers, accounting applications and security software current.

If you use cloud-based business tools, review your account security settings and make sure access is limited to the people who need it.

5. Protect your business information

Think about the information your business collects and where it's stored. Customer details, employee records, payroll information and financial documents should be accessible only to authorized people.

A few good habits can help:

  • Give employees access only to the information they need for their roles.
  • Remove access promptly when someone leaves the business or changes roles.
  • Use secure methods to share sensitive documents.
  • Avoid storing business information on unsecured personal devices.
  • Lock devices when they're not in use.

If your team works remotely, make sure everyone understands how to access business systems securely. Use approved security tools and follow your organization's IT guidance.

6. Back up important files

A reliable backup can help your business recover if files are accidentally deleted, a device fails or ransomware disrupts access to your data.

Identify the information your business couldn't easily replace, including financial records, client files and operational documents. Back it up regularly using a secure solution.

Don't assume your backup is working just because it's scheduled. Test your ability to restore files, and keep a separate or protected backup that attackers can't easily access through your regular accounts.

7. Verify financial requests and protect accounting access

Financial fraud can be especially disruptive for small businesses. A convincing message from someone posing as a supplier, executive or service provider could lead to an unauthorized payment.

Build verification into your regular processes:

  • Confirm changes to supplier banking details using a trusted contact method.
  • Independently verify unusual or urgent payment requests.
  • Restrict access to banking, accounting and payroll systems.
  • Review account activity and transactions regularly.
  • Make sure employees know how to report suspicious requests.

These steps can help protect your business finances while reinforcing good internal controls.

 

What should you do if your business is targeted?

Even with precautions in place, no business can eliminate every cyber risk. Knowing what to do next can help limit the impact.

If you suspect an account has been compromised or a fraudulent payment has been made:

  1. Act quickly. Contact your bank or financial institution immediately if money or banking access may be at risk.
  2. Secure affected accounts. From a trusted device, change compromised passwords, revoke suspicious sessions and review MFA settings.
  3. Get technical support. Contact your IT provider or cybersecurity specialist. If you suspect ransomware, avoid attempting a full recovery without appropriate guidance.
  4. Preserve relevant information. Keep suspicious messages, transaction details and other evidence that may help with the investigation.
  5. Assess your reporting obligations. Depending on the incident and the information involved, you may need to notify affected individuals, regulators or other organizations.

Having a basic response plan, including who to contact and how to access backups, can make a stressful situation easier to manage.

 

Make cybersecurity part of your business routine

Protecting your small business doesn't have to be complicated. Start with strong passwords, multi-factor authentication, regular software updates, secure backups and a clear process for verifying financial requests.

It's also worth reviewing who has access to your business systems and making sure your team knows how to recognize and report suspicious activity.

We’ve worked with Proactis, a cybersecurity partner that specializes in solutions for small and medium-sized businesses. The training we received helped our team better understand practical ways to recognize risks and protect our information.

For more practical advice to help manage your business, explore our Small Business Blog.