Quick answer: Wordfence and Sucuri both protect WordPress sites, but they work in different places. Wordfence runs on your own server as a plugin, with a firewall that inspects requests before WordPress loads, plus a detailed file scanner and login protection; the core plugin is free. Sucuri’s main protection is a paid cloud firewall that sits in front of your site, filtering bad traffic before it reaches your server and adding caching, with a free plugin for hardening and activity logs and paid malware clean up. Choose Wordfence for strong free protection you manage yourself; choose Sucuri if you want attacks stopped before they reach your hosting and expert clean up included.
WordPress runs a huge share of the web, which makes it a constant target. Most attacks are automated: bots trying common passwords, probing for vulnerable plugins or attempting to upload malicious files. A firewall plugin is one of the most useful layers you can add, but it is not a replacement for the basics. If you have not already, read our WordPress security guide for the essentials such as updates, strong passwords and backups.
How each one works
Wordfence: an endpoint firewall
Wordfence is installed as a normal plugin. Its firewall runs on your web server and inspects each request to your site. With the newer firewall in recent versions, you can set it to load before WordPress itself (Wordfence calls this extended protection), so it can block malicious requests even if they target a vulnerable plugin.
Because it runs inside your site, it can see exactly which user is logged in, which plugin is being targeted, and what the request contains.
Sucuri: a cloud firewall
Sucuri’s Website Firewall works differently. You change your domain’s DNS so that traffic goes to Sucuri’s network first. Sucuri filters out malicious requests and passes clean traffic on to your server. It also caches pages, acting as a content delivery network.
Because filtering happens before traffic reaches your hosting, attacks, including many denial of service attempts, never touch your server. The free Sucuri Security plugin is a separate product that adds an activity audit log, security hardening options, file integrity checks and remote scanning.
Feature comparison
Firewall
- Wordfence: free firewall with rules updated for known attacks. Premium subscribers get new rules as soon as they are released; free users get them after a delay.
- Sucuri: cloud firewall on paid plans only. Rules are managed by Sucuri’s team and applied across their network.
Malware scanning
- Wordfence: scans your server’s files directly. It compares WordPress core, theme and plugin files against the official versions in the WordPress.org repository and flags changes, as well as looking for known malware patterns and suspicious code.
- Sucuri: the free plugin offers remote scanning through SiteCheck, which looks at your site from the outside, plus file integrity checks of core files. Paid plans add deeper server side scanning.
A scanner that runs on your server can find hidden backdoors that a remote scan cannot see. Wordfence’s local scanning is one of its main strengths.
Login protection
- Wordfence: limits login attempts, locks out repeat offenders and offers two factor authentication on its premium version.
- Sucuri: the cloud firewall can protect the login page and admin area, including restricting access to specific IP addresses on paid plans.
Malware clean up
- Wordfence: offers a paid site cleaning service, separate from the plugin licence.
- Sucuri: clean up is included in its paid plans. If your site is hacked, their team removes the malware and helps get you off blacklists.
Performance
- Wordfence: because it runs on your server, it uses some server resources for every request and for scans. On cheap shared hosting, scans can be slow or hit memory limits. Settings let you reduce the load.
- Sucuri: the cloud firewall can actually speed up your site through caching and by blocking bad traffic before it uses your server’s resources. The DNS change and caching need to be set up properly, especially for logged in users, carts and checkouts.
Monitoring and logs
- Wordfence: live traffic view showing visits, logins and blocked requests in real time.
- Sucuri: the free plugin keeps an audit log of changes in the admin area, such as who updated which plugin or changed which setting. The firewall dashboard shows blocked attacks.
Cost
- Wordfence: the core plugin, firewall and scanner are free. Premium is a yearly licence per site and adds faster rule updates, two factor authentication, country blocking and other extras.
- Sucuri: the plugin is free. The firewall and the full security platform with clean up are paid yearly plans, priced per site, with options for faster response times.
Prices change, so check both websites for the current figures.
Which should you choose?
Wordfence suits you if
- You want strong protection without paying, at least to start.
- You or your developer are comfortable reviewing scan results and alerts.
- Your hosting has enough resources to run scans.
- You want detailed file level scanning on the server.
Sucuri suits you if
- You want attacks filtered before they reach your server.
- You would rather pay for a managed service than deal with alerts yourself.
- You want malware clean up included if the worst happens.
- You are happy to change DNS and have a CDN in front of your site.
- Your site is a regular target or suffers from heavy bot traffic.
Can you use both?
Some site owners run the Sucuri cloud firewall in front of the site and Wordfence on the server for its scanning and login protection. This can work, but take care:
- Configure Wordfence to read the visitor’s real IP address from the header Sucuri passes on. Otherwise it may see every visitor as coming from Sucuri and block the firewall itself.
- Avoid running two plugin based firewalls at once, which can conflict and slow the site.
- Do not rely on two tools to excuse skipping updates and backups.
What neither plugin replaces
- Updates. Keep WordPress, themes and plugins up to date. Firewalls help, but outdated code is still the most common way in.
- A supported PHP version. Running WordPress on an old PHP version leaves holes no plugin can fill. See our article on PHP versions and WordPress.
- Good hosting. Hosts that isolate accounts and patch servers matter a great deal.
- Backups. Stored off the server and tested.
- Fewer plugins. Every plugin is code that can have flaws. Remove what you do not use.
FAQ
Will a firewall slow down my site?
Wordfence adds some load to your server; on good hosting it is usually small. A cloud firewall like Sucuri’s often speeds a site up through caching.
Is the free version of Wordfence enough?
For many small sites it provides good protection. The main differences in premium are faster firewall rule updates and extra features such as two factor authentication.
My site was hacked. Which should I use?
Get it cleaned first, by a professional if you are unsure, and find how the attacker got in. Then put a firewall in place to stop it happening again.
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