Guides

Cyber security, in plain English.

Practical guides for UK businesses, written by Ashley Adkins. What to do when something goes wrong, and how to stop it happening in the first place.

Dealing with a cyber incident right now? Treat it as an emergency: start with the incident guides or call 03333 401 999.

Latest

New guides and news most weekdays.

All guides

Newest first.

  1. Guide

    How to answer a customer security questionnaire

    What they really ask, how to answer honestly and fast, and the answers that cause trouble later.
    Cyber Essentials3 min read
  2. Guide

    Would your backups actually save you? How to check

    Why backups fail when you need them, what Microsoft 365 really keeps, and a six-step check for this afternoon.
    Everyday protection4 min read
  3. Guide

    Cyber Essentials or ISO 27001: which one do you need?

    What each one proves, cost and time, who asks for which, and the order to do them in.
    Cyber Essentials4 min read
  4. Guide

    How to turn on MFA for your whole business

    Which accounts, which method, the Microsoft 365 and Google settings, and the Cyber Essentials rule.
    Everyday protection4 min read
  5. Guide

    Do I need to report a data breach to the ICO?

    The 72-hour rule, how to decide, what to tell people, and who else to call.
    Cyber incidents4 min read
  6. Guide

    Ransomware attack? What to do in the first hour

    Containing the attack, protecting your backups, whether to pay, and who you need to tell.
    Cyber incidents3 min read
  7. Guide

    Cyber Essentials or Cyber Essentials Plus?

    The difference, what the Plus audit tests, which you need, and a checklist for the 2026 requirements.
    Cyber Essentials3 min read
  8. Guide

    How much does ISO 27001 cost, and how long does it take?

    Typical UK costs and timelines, with three worked examples.
    ISO 270013 min read
  9. Guide

    How to set up DMARC on Microsoft 365 and Google Workspace

    SPF, DKIM and DMARC step by step, in stages, so your own email keeps arriving.
    Email security3 min read
  10. Guide

    Business email hacked? Here's what to do

    The first hour after a Microsoft 365 or Google Workspace account is taken over, and the hidden changes attackers leave behind.
    Cyber incidents3 min read
  11. Guide

    How to spot a fake invoice or bank detail change

    How invoice fraud works, the warning signs, and what to do if you've already paid.
    Cyber incidents2 min read
  12. Guide

    How much does Cyber Essentials cost?

    The 2026 certification fees, and the cost of getting ready.
    Cyber Essentials2 min read
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