The importance of website maintenance

Updated October 2026.

Once a website is live, it’s tempting to leave it alone and let it do its job. But the software underneath it keeps changing, and so do browsers, Google and your business. A site that nobody looks after doesn’t stay the same. It slowly gets less secure, slower and less accurate.

Think of it like a car: you wouldn’t buy one and never change the oil. Here is what regular maintenance protects, and why each part matters.

Out-of-date software is the most common way in

Attackers look for software with known flaws, and an old version of a plugin is exactly that. In Verizon’s 2026 Data Breach Investigations Report, exploited software flaws were the most common way attackers got in, at 31% of breaches, ahead of stolen passwords.

On WordPress sites, the weak spot is plugins. Patchstack’s State of WordPress Security in 2026 counted 11,334 new security flaws in WordPress software in 2025:

• 91% were in plugins and 9% in themes. WordPress itself had six, all rated low priority.
• 46% had no fix available when they were made public, so removing plugins you don’t need matters as much as updating the rest.
• The most-attacked flaws were being exploited at scale a median of five hours after they were made public.

Attacks on known flaws run against every site that hasn’t been updated, so being a small business doesn’t keep you out of reach. Three habits do most of the work:

• Update WordPress, plugins and themes every week, after taking a backup.
• Keep daily backups somewhere other than the server, and restore one now and then to prove it works.
• Watch for trouble: security scans, uptime alerts and a short list of people with admin access.

Updates can break things, so check after each one

Updates fix problems, but now and then a plugin update clashes with another plugin or the theme. After each round of updates, open the pages that matter most, on a phone and a computer, and send a test enquiry through the contact form. A form that quietly stops sending can cost you weeks of leads before anyone notices.

The server needs updating too. WordPress recommends PHP 8.3 or newer, and PHP’s own list of supported versions starts at 8.2, whose security fixes end on December 31, 2026. A site on an older version is running software that no longer gets security fixes.

Google rewards fast, useful pages

Editing a page often doesn’t, by itself, help it rank. Google’s guide to its ranking systems says freshness counts for searches where people expect recent information, such as news. For most business pages, what counts is that the page is useful, accurate and works well.

Speed is part of that. Google’s Core Web Vitals measure how quickly the main content appears, how fast the page responds to a tap or click, and whether the layout jumps around as it loads. Google says these, with other parts of page experience, are what its core ranking systems aim to reward. Old plugins, oversized images and a crowded server all slow a site down, and maintenance catches them.

Out-of-date pages cost trust

Visitors notice when a site hasn’t been touched in a while: last year’s offers, staff who have left, old opening hours or broken links. Read your main pages as a customer would every few months, and fix what is no longer true.

What a maintenance routine looks like

• Every week: check that backups ran, update WordPress, plugins and themes, look at the key pages and send a test enquiry.
• Every month: test a restore, review user accounts, run a security scan, check speed and Search Console.
• Every quarter: read your main pages for accuracy and do an accessibility spot check.
• Every year: renew the domain, review hosting and the PHP version, change passwords and audit the whole site.

The full list, with extra checks for WordPress, is in our website maintenance checklist.

Maintain with Millennial

Our website maintenance plans for WordPress sites include:

• WordPress version updates (weekly)
• Plugin version updates (weekly)
• Website backups (daily)
• Performance monitoring (daily)
• Security monitoring (daily)

These keep your website up to date and help protect it from malware and hacking. If you’d like us to maintain your site, get in touch.