Table of Contents
Introduction
Why AI has made phishing harder to spot
Phishing isn’t a tech puzzle; it’s a hygiene problem. Turn on phishing‑resistant MFA, lock down email with SPF, DKIM and DMARC, and sandbox risky clicks, and most “sophisticated” attacks become boring. This is the setup that actually works with Microsoft 365 or Google Workspace without eating your week.
The real cost of one wrong click
One click can hand over credentials, trigger malware or redirect a payment.
Technical Defenses That Stop Phishing Before It Reaches Staff
Email authentication with SPF, DKIM and DMARC
Email filtering and anti-spoofing protocols reduce the volume of malicious emails that reach inboxes.
- SPF lists the servers allowed to send mail for your domain.
- DKIM signs messages so tampering can be detected.
- DMARC tells receiving servers what to do when checks fail.
Pair these with Microsoft Defender for Office 365 to inspect links and files.
MFA, DNS filtering and link inspection
Enforce MFA and Conditional Access so stolen credentials alone cannot open an account.
DNS filtering blocks known phishing domains, malware distribution sites and command and control servers before any content loads.
Training Your Team to Spot and Report Scams
Red flags in email, text and phone attacks
Phishing messages are designed to look legitimate, so staff need to recognise the pressure tactics behind them. Social engineering relies on a lapse in decision-making.
- Urgent requests from a director to pay an invoice.
- Notifications asking staff to log back into a Microsoft 365 account.
- Texts (smishing) or calls (vishing) asking for personal or sensitive details.
Teach one rule: never give sensitive information by email, unknown websites or phone.
Making reporting fast and blame-free
Spotting the “dodgy email” alone is no longer enough, so reporting must be easy. Give staff one clear route to flag anything suspicious.
Thank people who report, even for false alarms. Fear of blame keeps mistakes hidden.
Payment Verification and Incident Response
Confirming financial changes through a known contact
Business email compromise (BEC) attacks often ask for a payment or a change of bank details. Always verify changes to financial information using a known contact method, not the details in the suspicious email.
- Call the supplier or director on a number you already hold.
- Require a second person to approve any new payee.
- Treat urgency as a warning sign.
What to do in the first hour after a click
Speed limits the damage. Staff should report the click immediately to the security team.
- Disconnect the device from the network.
- Report the incident through your single reporting route.
- Reset the affected passwords and review MFA settings.
- Check the account for unusual activity or forwarding rules.
Stolen credentials can lead to identity theft and fraud, so act before assuming nothing happened.
FAQ
What is the most common type of phishing attack?
Email phishing is the most common form. Fraudulent messages appear to come from a bank, software provider or colleague.
How does spear phishing differ from standard phishing?
Spear phishing targets one person. Attackers often use personal details from LinkedIn or company websites to seem credible.
Can AI phishing be spotted by spelling errors?
Not reliably. AI generates personalised messages without the awkward phrasing of older attacks, so check the request itself.
Conclusion
Phishing will keep evolving, but the defense stays practical: authenticate your email, enforce MFA, train staff, and verify every payment change. Layer these controls so one mistake never becomes a breach.
