How to strengthen your business’s phishing protection beyond staff training
Posted on 21 September 2026 by Rachael WhitePhishing remains the most common cyber threat facing UK businesses. Training employees to recognise suspicious messages is important, but it should never be the only line of defence.
Even a careful, well-trained person can be caught by a convincing message during a busy working day. A stronger approach combines people, processes and technology, so one mistake does not have to become a serious incident.
Phishing messages are designed to prompt an action. An attacker may want someone to reveal a password, approve a payment, open a harmful attachment or visit a false login page. Some campaigns are sent widely, while others use information about a business, supplier or senior employee to make the request more convincing.
The answer is not to expect employees to inspect every message perfectly. Email is essential to everyday work, and attackers deliberately exploit urgency, authority and familiar business processes. Training helps, but the organisation must provide protection around the person receiving the message.
Phishing protection has four layers:
- Reduce the number of malicious messages that reach employees.
- Make suspicious requests easier to recognise and report.
- Limit the damage if somebody clicks or shares information.
- Detect and respond to incidents quickly.
Layer 1: Stop more phishing messages from arriving
The first priority is to reduce the number of harmful emails that reach inboxes. Email filtering can identify suspicious senders, attachments, links and known malware before an employee has to make a decision.
Businesses should also protect their own email domains with SPF, DKIM and DMARC. These controls help receiving mail systems verify whether a message claiming to come from your domain is genuine. Correct configuration can make it harder for criminals to impersonate your organisation and can help protect customers and suppliers from fraudulent messages sent in your name.
Review what your website and social media profiles reveal too. Names, roles, reporting lines, suppliers and travel plans can all help an attacker create a believable targeted message.
Layer 2: Help employees recognise and report suspicious requests
Training works best when it reflects the situations employees actually face. Finance teams may receive false invoices or bank-detail changes. Senior leaders and their assistants may be targeted with urgent payment requests. IT administrators may receive false security alerts or requests for privileged access.
Give people clear ways to check unusual requests. A change to bank details, a request for credentials or an urgent payment should be confirmed using a trusted second channel, such as a known telephone number or the supplier’s established portal. Do not rely on contact details contained in the suspicious message.
Reporting must also be quick and blame-free. Employees are more likely to raise an alert promptly when they know they will be supported, including when they have already clicked. That early warning gives the IT team a better chance to protect other users and contain the incident.
Layer 3: Limit what happens after a click
Assume that some convincing messages will get through. The next layer should prevent a stolen password or opened attachment from giving an attacker unrestricted access.
- Use multi-factor authentication, preferably a phishing-resistant method such as a passkey where it is supported.
- Keep operating systems, applications, browsers and security tools up to date.
- Restrict administrator privileges and review access when people change roles or leave.
- Use endpoint protection to detect and contain malicious files or behaviour.
- Block access to known malicious websites through web and DNS filtering.
- Segment networks so a compromised account or device cannot reach everything.
These controls work together. For example, MFA can help stop an attacker using a stolen password, while limited privileges and network segmentation can reduce the reach of a compromised account.
Layer 4: Be ready to respond
A fast, organised response can reduce disruption. Employees should know how to report a suspicious message and what to do if they have clicked a link, opened a file, entered a password or approved a login request.
Your incident response plan should set out who takes control, how accounts and devices will be isolated, which passwords or sessions need to be reset, how activity will be reviewed, and when customers, insurers, regulators or law enforcement may need to be informed.
Test the plan before it is needed. A short tabletop exercise can reveal missing contact details, unclear responsibilities or a dependency on systems that might be unavailable during an incident.
Your phishing defence checklist:
- Check that SPF, DKIM and DMARC are correctly configured for every business email domain.
- Confirm that email filtering and protection policies apply to every user.
- Require a second-channel check for payment changes, sensitive data requests and unusual access requests.
- Make phishing reporting simple and tell employees what will happen after they report a message.
- Use MFA and review whether higher-risk accounts can move to phishing-resistant authentication.
- Keep devices patched, protected and free from unnecessary administrator access.
- Review network segmentation, web filtering and security monitoring.
- Document and practise the response to a compromised account or device.
Employees play an important part in cyber security, but they should not be expected to carry the risk alone. The most resilient businesses make suspicious activity harder to reach people, easier to report and less damaging when a mistake occurs.
Beaming helps UK businesses review the security of their networks and put practical, layered protection in place. If you would like to discuss your current controls, speak directly to our experienced team.