Cyber hygiene

Most breaches still get in through the basics. Check yours in five minutes.

Missing MFA, late updates, backups that can be deleted, and accounts nobody closed. Here is what good hygiene looks like, what the latest breach data says, and a 12-point review that shows your gaps in the order to fix them.

Breach data from the Verizon 2026 DBIR, patch timeframes from ASD. Checked 30 October 2026.

  • The 12 basics
  • 2026 breach data
  • Free hygiene review

Reviewed by Blake Bath, General Manager, on 30 October 2026.

A designer works on her laptop at a timber desk in a busy studio, her phone face down beside a mug and a small plant.
31% of breachesStarted with an unpatched vulnerability in the 2026 DBIR, now the top way in.

What the data says

What the 2026 breach data says about the basics.

From the Verizon 2026 Data Breach Investigations Report, covering more than 22,000 breaches.

Unpatched systems

Exploiting vulnerabilities was the top way in, at 31% of breaches.

  • Automatic updates
  • Checked weekly
  • Old systems replaced

Cyber hygiene review

Run a five-minute cyber hygiene review.

Tick what is true today. Be honest: if you are not sure, leave it unticked. You get your gaps in the order we would close them.

Tick what is true for your business today.

Where you stand

0of 12 basics in place

12 gaps to close.

  • MFA on every accountStolen passwords are still one of the most common ways in.
  • Admins use passkeys or security keysAdmin accounts can switch off everything else.
  • A business password managerReused passwords turn one breach into many.
  • Updates install automaticallyVulnerability exploitation is now the top way into breached businesses.
  • Nothing past its support dateUnsupported software stops getting fixes.
  • Endpoint protection with 24/7 monitoringAn alert nobody reads is not protection.
  • Disk encryption on every deviceA lost laptop should be a hardware cost, not a data breach.
  • DMARC at reject on your domainStops scammers sending email as your business.
  • Backups that are offsite, immutable and testedBackups that cannot be deleted are what beat ransomware.
  • Leavers lose access the same dayOld accounts are easy doors.
  • You know which suppliers can reach your systemsThird parties were involved in nearly half of breaches in the 2026 DBIR.
  • Staff know how to report something oddPeople are involved in most breaches. Fast reports limit the damage.
Close the gaps

What good looks like

Good hygiene, area by area.

AreaGood looks likeCommon gap
Sign-inMFA everywhere, passkeys for admins, separate admin accountsText message codes on admin accounts
PasswordsBusiness password manager, no reuseShared spreadsheet of logins
UpdatesAutomatic, checked, critical fixes within 48 hoursUpdates deferred for months
DevicesEncrypted, managed, monitored 24/7Antivirus with nobody watching
EmailDMARC at reject, impersonation protectionDMARC stuck at none
BackupsOffsite, immutable, restore-testedOne copy that ransomware can delete
PeopleLeavers removed same day, staff report quicklyOld accounts still active
SuppliersKnown list, least accessUnknown apps with access to mail and files

Updates

How fast updates should go on.

WhatCritical or being exploitedOtherwise
Online services and internet-facing systems48 hoursTwo weeks
Office software, browsers, email clients, PDF readersTwo weeksTwo weeks
Unsupported softwareRemove or replaceRemove or replace

Windows Server 2016 stops getting security updates on 12 January 2027. Check your servers now.

What goes wrong

Why hygiene slips.

  • New tools before basicsBuying the next product while MFA is still missing.
  • Deployed is not configuredThe tool is installed but the policy that makes it work is off.
  • Nobody owns itHygiene drifts without a named person or provider checking it.
  • Checked once a yearSettings change every month. Check at least quarterly.

Our view

Measure it, do not assume it.

Most businesses we assess believe they have MFA everywhere and automatic updates. When we check the settings, there is usually an exception: a shared mailbox with a password, an old admin account, or a group of laptops that stopped updating months ago.

Good hygiene is less about tools and more about checking, every month, that what should be on actually is. That is what we report on for our clients.

The order

Getting the basics right in five steps.

  1. Step 1Review

    Check settings, not assumptions.

  2. Step 2Fix sign-in first

    MFA everywhere, passkeys for admins.

  3. Step 3Fix updates and devices

    Automatic, encrypted, monitored.

  4. Step 4Fix email and backups

    DMARC at reject, immutable tested backups.

  5. Step 5Check monthly

    A short report that shows nothing has slipped.

Questions

What people ask about cyber hygiene.

What is cyber hygiene?

The everyday basics that make a business hard to break into: MFA on every account, updates applied quickly, endpoint protection that someone watches, backups that cannot be deleted, and people who report things. Most breaches still come through gaps in these basics, not advanced techniques.

What is a cyber hygiene review?

A check of those basics against what is actually configured, not what people think is configured. The check on this page is a quick self-review. A proper review looks at the settings in Microsoft 365, your devices and your backups, and produces a list of gaps in priority order.

How fast should updates be applied?

The Essential Eight at Maturity Level One sets 48 hours for online services when a vulnerability is critical or being exploited, and two weeks otherwise. Office software and browsers are two weeks. Automate it, then check it actually happened.

Is antivirus enough?

Not on its own. Endpoint detection and response watches behaviour as well as known threats, and 24/7 monitoring means someone acts on what it finds outside business hours.

Does Microsoft 365 need a separate backup?

Microsoft keeps deleted items for limited periods, then they are gone. A separate backup, or Microsoft 365 Backup, protects against deletion by a hacked account, a departing staff member or a mistake found months later.

How does this relate to the Essential Eight?

Most of these basics are part of the Essential Eight or support it. Getting them in place is the practical path to Maturity Level One, which is what many insurers and clients now ask about.

Next step

Want a proper hygiene review?

We check the actual settings in your Microsoft 365, devices, email and backups, and give you a scored list of gaps with a cost to close each one.

Chip, the Real Bytes support assistant

Keep reading

Reviewed by Blake Bath, General Manager, on 30 October 2026. Breach statistics from the Verizon 2026 DBIR (data from November 2024 to October 2025). Patch timeframes from ASD. Checked 30 October 2026. Verizon, Data Breach Investigations Report; Positive Technologies, Verizon DBIR 2026 summary; ASD Blueprint, Essential Eight patch applications; ASD, Essential Eight maturity model; Microsoft Lifecycle, Ending support in 2027

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