5 Cyber Security Quick Wins for UK Small Businesses

1. Turn on automatic updates

Out-of-date software can contain known vulnerabilities. Attackers actively look for these weaknesses because they are often easy to exploit.

Check that automatic updates are enabled for:

• Windows, macOS and mobile operating systems
• Web browsers
• Microsoft 365 or Google Workspace applications
• Antivirus and endpoint protection tools
• Business-critical software
• Routers and other network devices

Also remove software that is no longer supported by its supplier. Unsupported software will not receive security fixes.

If you manage company devices through an IT provider, ask them to confirm that updates are being applied and monitored.

Quick win: Choose one device today and review its update settings. Then repeat the process across the business.

2. Strengthen passwords and enable MFA

Password reuse creates a single point of failure. If one password is stolen, attackers may try it on email, cloud storage, banking and other business accounts.

Take these steps:

• Use a different password for every important account
• Use long passwords or passphrases
• Store passwords in a reputable password manager
• Change default passwords on routers and business systems
• Remove accounts belonging to former employees
• Enable multi-factor authentication wherever it is available

Multi-factor authentication, or MFA, adds another verification step after a password. This might be an approval on a mobile phone or a security code.

Start with your most important accounts:

• Business email
• Microsoft 365 or Google Workspace
• Online banking and payment services
• Remote access tools
• Cloud storage
• Website administration
• Social media accounts

Quick win: Enable MFA on your email administrator account first. Email is often the key to resetting other passwords.

3. Give people only the access they need

Not every employee needs access to every file, system or administrative setting.

Review who can access:

• Customer and financial data
• Payroll information
• Shared drives
• Cloud applications
• Website and social media accounts
• Network and security settings

Remove unnecessary permissions and use standard user accounts for everyday work. Administrative accounts should be reserved for system changes.

You should also review access when someone changes role or leaves the business. Delayed access removal is a common and avoidable risk.

Quick win: Create a simple list of your key systems and the people who can access them. Remove anyone who no longer needs access.

4. Run a 30-minute phishing briefing

Phishing emails are designed to make people act quickly. They may appear to come from a customer, supplier, colleague or senior manager.

Ask your team to pause before they:

• Open an unexpected attachment
• Click a login link
• Share passwords or payment information
• Change supplier bank details
• Approve an unusual invoice
• Respond to an urgent request from a senior employee

Warning signs include unusual wording, unexpected requests, pressure to act immediately and links that do not match the organisation they claim to represent.

Create a simple reporting process. Employees should know exactly who to contact if they click a suspicious link or provide information.

Do not blame people for reporting mistakes. Early reporting gives you a better chance of changing passwords, blocking access and limiting damage.

Quick win: Spend 30 minutes discussing one realistic phishing example with your team. Make sure everyone knows how to report it.

5. Check your backups and test a restore

Backups are essential if your business experiences ransomware, hardware failure, accidental deletion or a lost device.

First, identify the information your business could not operate without. This may include:

• Accounting records
• Customer and supplier information
• Contracts and legal documents
• Business-critical spreadsheets
• Shared files
• Website data
• Operational systems

Confirm that this information is backed up automatically. Keep at least one backup separate from your normal user accounts and devices. This helps protect it if an attacker gains access to your network.

A backup is only useful if you can restore it. Test the process by restoring a small number of files and confirming that they open correctly.

Quick win: Restore one important file today. If nobody knows how to do it, document the process while you investigate.

How these quick wins support Cyber Essentials

These actions support the five areas assessed by Cyber Essentials:

• Firewalls: Protect your internet connection and devices
• Secure configuration: Remove unnecessary software, accounts and access
• Security update management: Apply security patches promptly
• User access control: Restrict access and use MFA
• Malware protection: Use suitable protection and reduce phishing risk

They are not a complete security programme, but they provide a strong starting point for a growing business.

You can also use SimpleCyber's Cyber Essentials Readiness Check to review your position in plain English. It takes around 20–40 minutes and highlights areas that may need attention.

Start with one task today

Do not wait until you have a perfect security plan.

Start with the task that reduces the most immediate risk:

1. Turn on automatic updates.
2. Enable MFA on business email.
3. Remove old user accounts.
4. Brief staff on phishing.
5. Test a backup restore.

If you would like practical help preparing for Cyber Essentials or strengthening your wider security controls, contact SimpleCyber for a straightforward conversation about your business.