Best WordPress Security Plugins 2026: What They Cost and What They Can't Do

I wrote the first version of this post in 2023, back when WordPress was the answer to every project I took. Since then it got a "2025" stamped on it, a paragraph about AI-powered attacks, and a comparison table full of checkmarks. Most of the facts in it went stale anyway. One of the plugins changed its name twice. Another one raised its price. The vulnerability numbers nearly doubled.

I also don't build new sites on WordPress anymore. I wrote about why I stopped using WordPress after six years, and nothing since has changed my mind. But I still look after a handful of WordPress sites for clients, and plenty of people reading this run one. So here is the refreshed version: what each WordPress security plugin costs now, who owns it, and what it can and can't do for you.

I have not run a controlled side-by-side test of these plugins. What follows is current research plus the reasoning I'd use for a client site, not a lab benchmark.

The Numbers That Should Decide Your Choice

Patchstack's 2026 report counted 11,334 new vulnerabilities in the WordPress ecosystem in 2025, up 42% from the year before. 91% were in plugins, 9% in themes. WordPress core had six, all low priority.

Two more numbers from that report matter more for picking a security plugin than any feature list. 46% of vulnerabilities had no patch available when they were publicly disclosed. And for the heavily exploited ones, the weighted median time from disclosure to mass exploitation was five hours.

Put those together and the question changes. "Which plugin has the most features" stops mattering. What matters is: when a hole in one of your plugins goes public at 2am and there's no fix yet, does anything stand between that hole and the attacker? That's what a firewall rule or a virtual patch is for. Malware scanners and login limits help too, but they work after the fact.

A Security Plugin Is Still a Plugin

The security plugin runs inside the same WordPress install it's protecting, with the same permissions as every other plugin, and it updates through the same mechanism.

That mechanism is controlled by WordPress.org. In October 2024 it was used to take over Advanced Custom Fields, rename it, and push the new version onto sites without their owners asking. The ACF team called it a supply chain attack. I covered that in the post linked above, and the same trust problem shows up outside WordPress too: I wrote about it for JavaScript in one compromised npm package away from disaster.

Security plugins have had their own bugs. In 2023, All-In-One Security version 5.1.9 shipped a bug that stored users' passwords in plain text in the database. It was fixed in 5.2.0, which also deleted the logged passwords. Every plugin on this list has had vulnerabilities reported over the years. That's normal for software. It's also the reason "install a security plugin" doesn't count as a security strategy on its own.

Wordfence: Still the Default

Wordfence has over 5 million active installs on WordPress.org and pushed an update days before I wrote this. It's the one most people already have.

The free version gives you an application firewall, a malware scanner, brute force protection, 2FA and passkey login. The catch is in the small print: free users get new firewall rules and malware signatures 30 days after paying users. Compare that with the five-hour exploitation number above. A rule that arrives a month late protects you from last month's attacks.

Premium fixes the delay with real-time rules and adds country blocking. The price went up in December 2024: Premium went from $119 to $149 per site per year, Care from $490 to $590, and Response from $950 to $1,250. The 2025 version of this post still listed $119. That was already wrong when it was published.

The firewall runs on your server. Every request still reaches PHP before Wordfence decides what to do with it, and full scans use server resources. On cheap shared hosting you'll notice. On decent hosting you usually won't.

Patchstack: Virtual Patching, Priced for Agencies

The 2025 version of this post called Patchstack "the clear leader". I'd phrase it more carefully now, mostly because of who the pricing is built for.

Patchstack runs one of the biggest WordPress vulnerability databases, which is why its reports get quoted everywhere, including in this post. Its core product is virtual patching: when a vulnerability is disclosed, Patchstack ships a targeted rule that blocks that specific exploit on your site before the plugin author releases a fix. Given the 46% unpatched-at-disclosure number, that's the most useful feature on this whole list.

The free plan only detects. It watches your plugins, themes and core version and emails you when a known vulnerability affects you. That alone beats finding out from a hacked homepage. Protection is paid. The pricing page currently lists the Developer plan at $69 a month billed monthly, with extra sites and team seats as add-ons, plus custom plans for enterprises and hosts. The pricing has changed more than once, so check it yourself.

For an agency or freelancer managing 20 client sites, that's reasonable. For one small business site, it's a lot. The WordPress.org plugin has around 60,000 active installs, tiny next to Wordfence, which tells you its customers are mostly professionals and hosts.

Solid Security Is Now Kadence Security

If you installed iThemes Security years ago, it has had three names. Liquid Web bought iThemes in 2018. The plugin became Solid Security under the SolidWP brand in 2023. Then in May 2026, Liquid Web folded SolidWP into its Kadence product line, and the plugin is now listed on WordPress.org as Kadence Security, by Nexcess, with around 700,000 active installs.

According to reports from the time, the rename showed up in people's admin panels without much advance notice. Liquid Web says existing customers keep their plans and pricing, and that switching to the new Kadence tiers is optional. New buyers get security bundled into Kadence's Essentials, Pro and Elite tiers instead of a standalone license.

Feature-wise it's still the user-friendly option: 2FA, passkeys, brute force protection, file change detection, and an activity log. The Pro version has offered virtual patching through a Patchstack integration. Whether that integration carries over unchanged into every new Kadence tier, I couldn't confirm from the public pages, so check before you buy.

A plugin that changes owners and names every few years still works fine. It does mean you should re-read what you're paying for at every renewal.

Sucuri: The Firewall Sits in Front of Your Server

Sucuri has been owned by GoDaddy since 2017. The free Sucuri plugin (around 600,000 installs) is mostly auditing, hardening and remote scanning. The real product isn't a plugin at all.

The Sucuri website firewall is a cloud proxy. Your DNS points at Sucuri, Sucuri filters the traffic, and only clean requests reach your server. That's the structural difference from Wordfence: bad traffic gets dropped before it touches PHP, which also means DDoS mitigation and a CDN come with it.

Current pricing on their site: the firewall alone is $9.99 a month (Basic) or $19.98 (Pro). The full platform, which adds malware cleanup with a response-time guarantee, starts at $229 a year for one site, then $339 and $549 for faster scans and SLAs. The 2025 version of this post said $199.99. That number is gone.

If a site has been hacked before, or gets real traffic that makes a cleanup expensive, the platform plan is the one I'd look at first.

The Free Hardening Options: AIOS and Shield

All-In-One Security (AIOS) is maintained by Team Updraft, the UpdraftPlus people, and has around 1 million active installs. The main plugin is free and covers login lockouts, renaming the login URL, file permission checks, a basic firewall, and database prefix changes. It has no virtual patching and no threat feed. Think of it as a checklist of hardening settings with toggles, which is useful if you'd rather not edit .htaccess and wp-config.php yourself.

Shield Security focuses on bot blocking and brute force protection, with file scanning and an audit trail. It's much smaller, around 30,000 active installs. Paid plans are per site per year. If your problem is mostly bots hammering the login page, it's an option. Most people will get the same result from Wordfence or AIOS plus a firewall at the hosting or CDN level.

WordPress Security Plugins Compared

Pricing as listed on vendor sites and reported in October 2026. Install counts from WordPress.org.

Plugin	Owner	Active installs	Free version	Paid entry price	Virtual patching
Wordfence	Defiant	5M+	Yes, rules 30 days late	$149/year	No, firewall rules instead
Patchstack	Patchstack	60K+	Detection and alerts only	$69/month (Developer)	Yes
Kadence Security (formerly Solid/iThemes)	Liquid Web / Nexcess	700K+	Yes	Bundled in Kadence tiers	Pro has had it via Patchstack
Sucuri	GoDaddy	600K+ (plugin)	Plugin only, no firewall	$9.99/month firewall, $229/year platform	Cloud WAF rules
All-In-One Security	Team Updraft	1M+	Yes	Premium available	No
Shield Security	Independent	30K+	Yes	Per site, yearly	No

What I'd Install, Depending on the Site

One security plugin. Not two. Two firewall plugins fighting over the same requests is how you lock yourself out of your own admin.

For a single small business site where the owner won't update quickly: Wordfence Premium at $149 a year. The 30-day delay on the free version is the reason. If someone does update plugins within a day or two of a release, Wordfence free plus Patchstack's free vulnerability alerts is a sensible zero-cost setup.

For an agency or freelancer with many client sites: Patchstack. Virtual patching across a portfolio is exactly the problem it's priced for.

For a site that has already been hacked, or one where downtime costs real money: the Sucuri platform, because the firewall sits outside your server and cleanup is included.

For someone who mostly wants hardening settings and has a firewall elsewhere (Cloudflare, or a host-level WAF): AIOS is fine.

Then do the boring work, which matters more than the plugin choice. For the WordPress sites I still maintain, core auto-updates stay on. One client came to me with 34 active plugins, and we got that down to 11. Every plugin you delete is a vulnerability you never have to patch, and a lot of them can be replaced with a few lines of PHP. The rest is in my website security hardening checklist: backups you have restored from at least once, 2FA on every admin account, least-privilege user roles, and a host that isolates sites from each other. None of it needs a subscription.

What No Plugin Fixes

The volume problem is getting worse, not better. In August 2026 the WordPress security team received 773 vulnerability reports in one month, against a historical baseline of 20 to 30, largely driven by AI-assisted research. I wrote about what that means in WordPress got 773 security reports in one month. More reports means more disclosures, and the five-hour exploitation window doesn't care whether your plugin author is on holiday.

A security plugin buys you monitoring and a firewall. It doesn't buy immunity, and it doesn't change the fact that a typical WordPress site runs dozens of plugins from authors with no security team behind them. That's a big part of why I stopped putting WordPress into new proposals unless the project needs something WordPress already solves well. I wrote down that exact cutoff in I stopped recommending WordPress to new clients.

I don't know if the plugin ecosystem can keep up with the rate vulnerabilities are being found now. Maybe virtual patching at the host level becomes standard and this whole category shrinks. Maybe it doesn't.

If you run a WordPress site and you're not sure what's actually installed on it or which security setup fits, I can take a look. I can't promise a site that never gets a vulnerability. What I can offer is a clear list of what to remove and what needs protecting. Let's talk if that sounds useful.