Executive answer: Solid Security — formerly iThemes Security, renamed after the company rebranded to SolidWP — is a WordPress-native security plugin: login hardening, two-factor authentication, brute-force protection, and vulnerability patching, running inside your WordPress install rather than in front of it. The free tier alone covers real fundamentals; Pro adds vulnerability patching and file monitoring that matter more as a site grows.
Quick Verdict
| Best for | WordPress site owners who want meaningful login/hardening security without leaving the dashboard |
| Not ideal for | Sites wanting traffic-level filtering before requests even reach the server — that’s Sucuri’s job, not this plugin’s |
| Biggest strength | The free tier is a genuinely complete hardening layer, not a crippled trial |
| Biggest weakness | Current Pro pricing could not be confirmed against a live vendor page at time of writing |
| Value for money | Excellent at free; reasonable at Pro if file monitoring and virtual patching matter to your risk profile |
| Overall | Recommended, start free and upgrade only if a specific Pro feature is the actual gap |
What Solid Security Actually Is
A WordPress plugin, not a separate service — it runs from inside your WordPress dashboard and modifies how WordPress itself behaves: limiting failed login attempts, requiring two-factor authentication, hiding the default login URL, and detecting unauthorized file changes. This is fundamentally different from Sucuri‘s approach, which filters traffic before it reaches your server at all — Solid Security hardens what’s already there.
Key Features
- Login hardening — limits failed login attempts, hides or moves the default WordPress login URL, free tier.
- Two-factor authentication — free tier, a meaningful step up from password-only login security.
- Brute-force protection — free tier, blocks the specific attack pattern most commonly used against WordPress logins.
- File change detection — Pro tier, flags unauthorized modifications to core, theme, or plugin files.
- Virtual patching (via Patchstack integration) — Pro tier, protects against known vulnerabilities before you’ve had a chance to update the affected plugin yourself.
- Passkey support — Pro tier, a newer authentication method beyond traditional 2FA.
Real-World Use Cases
- A small business site owner installs the free version, enables 2FA and login limiting, and has a meaningfully hardened site against the most common attack pattern (credential stuffing / brute force) at zero ongoing cost.
- An agency managing 10 client sites uses the Pro multi-site tier for virtual patching specifically — a known vulnerability in a widely-used plugin gets patched across every client site before the agency has manually updated each one, reducing the window of exposure.
- A site running many third-party plugins relies on file change detection to catch a compromised or malicious plugin update before it causes visible damage, rather than discovering the problem after the fact.
- A membership or client-portal site with many user accounts enables passkey support specifically to reduce password-related support tickets and credential-stuffing risk simultaneously — a case where the authentication upgrade solves a support problem and a security problem at the same time.
- A site owner who just migrated from a different host uses the free version’s login hardening as an immediate first step post-migration, before evaluating whether the new hosting environment’s own security tooling makes Pro’s additional features redundant or still worthwhile.
Pricing
| Plan | Price | Sites |
|---|---|---|
| Free | $0 | Unlimited — core hardening, 2FA, brute-force protection |
| Solid Security Pro | $99/year | 1 site |
| Pro (5 sites) | $199/year | 5 sites |
| Pro (10 sites) | $299/year | 10 sites |
| Pro (25 sites) | $549/year | 25 sites |
These figures are consistently reported across several third-party sources but could not be independently confirmed against a live, current SolidWP pricing page — the product’s pricing URL redirected elsewhere when checked directly. Treat these as directionally reliable rather than fully verified, and confirm current numbers on solidwp.com before budgeting against them.
Estimate your annual Pro cost
Steps to the cheapest published tier that covers your site count (1/5/10/25). Figures are third-party sourced, not independently confirmed — see the note above.
Feature/Value Comparison: Solid Security vs. Sucuri
| Solid Security | Sucuri | |
|---|---|---|
| Layer protected | WordPress install itself | Traffic in front of the server |
| Free tier | Real hardening fundamentals, unlimited sites | None |
| Malware cleanup | Not included at any tier | Included on Platform tiers |
| Multi-site pricing | Published, per-site-count tiers | Not published, sales conversation required |
Pros and Cons
| Pros | Cons |
|---|---|
| Free tier is a genuinely complete hardening layer, not a crippled trial | No malware cleanup at any tier — a compromise is still your problem to fix |
| Published, predictable multi-site pricing tiers | Pro pricing could not be independently verified against a live vendor page |
| Virtual patching (Pro) protects against known vulnerabilities before you update manually | No traffic-level filtering — only protects what's already reached the server |
Alternatives
- Sucuri — traffic-level filtering plus a cleanup team, at a materially higher price. Complementary rather than competing; consider both for a genuinely high-stakes site.
- Wordfence — the other major WordPress-native security plugin, with a comparable free tier and a firewall component Solid Security doesn't include natively. Its free tier includes a basic firewall that Solid Security's free tier does not, which is worth weighing if budget rules out any paid tier entirely.
Solid Security vs. Wordfence, specifically
These two are the most direct competitors in the WordPress-native plugin category, and the comparison worth making explicit: Wordfence's free tier bundles a basic application firewall alongside malware scanning, which Solid Security's free tier does not include at all — Solid Security's free strength is login/authentication hardening specifically, not firewall functionality. If a firewall matters to you and paying for Sucuri isn't an option, Wordfence's free tier covers ground Solid Security's free tier doesn't. If login security and file monitoring are the priority, Solid Security's feature set is more focused on exactly that.
Detailed Analysis
Solid Security vs. Sucuri, in practice
These solve adjacent problems rather than competing directly. Solid Security hardens the WordPress install itself — the equivalent of reinforcing the locks and windows. Sucuri filters traffic before it reaches the server at all — the equivalent of a security gate at the property line. Running Solid Security's free tier alongside Sucuri's firewall is a reasonable, complementary setup for a site that takes security seriously without the highest budget; the two aren't redundant with each other, and neither replaces the other's specific function.
Why the pricing verification gap matters here specifically
We're flagging the Pro pricing as third-party sourced rather than confirmed, which is unusual for this site's normal standard of direct vendor verification. The reason: SolidWP's pricing URL redirected to an unrelated page when checked directly, and the specific product page returned a 404. This happens with rebranded products (iThemes → SolidWP) where old URLs break during the transition — it's a real gap in our verification, not a minor caveat, and it's exactly the kind of detail worth confirming yourself before committing to an annual plan.
What the free tier deliberately leaves out
Being direct about the gap matters more than a generic "upgrade for more features" pitch. The free tier's login hardening and brute-force protection address the single most common WordPress attack vector — automated credential-stuffing bots trying common password combinations at scale. What it doesn't cover: it won't detect if an attacker already has valid credentials and is misusing them (file change detection is Pro-only), and it won't proactively patch a known vulnerability in a plugin you haven't updated yet (virtual patching is also Pro-only). For a site with a small, well-maintained plugin set and strong unique passwords already in place, the free tier's gaps matter less. For a site running dozens of plugins from varied sources, updated inconsistently, those specific Pro features close a real exposure window.
Frequently Asked Questions
Is the free version of Solid Security actually enough?
For most small to medium sites, yes — login hardening, 2FA and brute-force protection cover the most common attack vectors. The Pro tier's value is concentrated in vulnerability patching and file monitoring, which matter more for sites with a larger plugin footprint or higher traffic.
Do I need this if I already use Sucuri?
They're complementary rather than redundant — Sucuri protects at the traffic level, Solid Security hardens the WordPress install itself. Running both isn't paying twice for the same protection.
What happened to the iThemes brand name?
The company rebranded to SolidWP, and iThemes Security was renamed Solid Security as part of that change — same underlying product and team, different name. Older reviews and guides using "iThemes Security" are referring to the same plugin.
Does the free tier include any ongoing update commitment?
The plugin is actively maintained on WordPress.org with a visible update history — check the current changelog directly for release cadence, since that's a better signal of active maintenance than any marketing claim.
Can I import settings if I switch from Wordfence?
We could not independently verify a direct settings-import path between the two plugins. Treat a switch as a fresh configuration rather than assuming a one-click migration, and budget time to re-enable 2FA and re-add trusted IPs manually.
Does Solid Security affect page load speed?
As a WordPress plugin running server-side, it adds some processing overhead, but login hardening and brute-force protection specifically only activate on login-related requests, not on every page load — the practical performance impact for a typical visitor browsing the site is minimal. File monitoring on Pro runs as a background scan rather than something visitors experience directly.
How We Scored This
| Criterion | Score | Why |
|---|---|---|
| Free tier completeness | 9/10 | Genuinely covers the fundamentals most small sites need, no artificial crippling |
| Pricing transparency | 4/10 | Pro pricing could not be verified directly; only third-party sourced |
| Feature depth at Pro | 7/10 | Virtual patching and file monitoring are real, valuable additions |
| Multi-site value | 7/10 | Per-site cost drops meaningfully at higher tiers, a fair scaling structure |
Overall: 6.75/10. Methodology: each criterion scored against the evidence above; pricing transparency scored lower specifically because we could not independently confirm the numbers, which is a real gap rather than a rounding error. Evaluated August 2026.
Is this worth it for a single small blog with low traffic?
The free tier alone, yes — the fundamentals it covers apply regardless of traffic volume, since automated attack bots don't check your analytics before targeting a login page. Pro's additional value scales more with plugin count and complexity than with traffic, so a simple, low-plugin blog gets less marginal benefit from Pro specifically than a complex site does.
Final Decision
- Choose Free if: you run one or a few small sites and want real hardening without a subscription.
- Choose Pro if: file monitoring or virtual patching against known vulnerabilities specifically matters to your risk profile.
- Add Sucuri too if: the site's stakes justify traffic-level filtering and a cleanup guarantee on top of hardening.
- Verify current Pro pricing directly before committing to an annual plan, given the confirmation gap noted above.
How We Assessed This
The plugin's free-tier feature set is confirmed directly against its WordPress.org listing. Pro pricing is corroborated across multiple third-party sources but could not be independently verified against a live vendor page, and is flagged as such rather than presented as confirmed fact. Disclosure: this page contains no affiliate links currently — the product URL is a plain link.
Related
Compare with a popular alternative
Free; Pro from $99/year, 1 site (third-party sourced, unverified)
Stronger at: Free tier is a genuinely complete hardening layer covering login/2FA/brute-force, not a crippled trial
Main limitation: No malware cleanup at any tier, and no traffic-level filtering of incoming requests
From $9.99/mo firewall; $229+/yr Platform
Stronger at: Traffic-level filtering plus a real malware cleanup team on Platform plans
Main limitation: No published multi-site pricing — every extra site needs a sales conversation
Alternatives worth comparing
