Malware Monitoring, Removal and Prevention

CloudProxy Firewall: Prevent Website Attacks

Stop attacks before they hit your website.

We offer holistic website security which means that we’re able to detect and clean malware, as well as prevent it from ever hitting your website. Over the years we have learned how website attacks originate and we used that insight to build our Website Application Firewall (WAF), CloudProxy.

Our CloudProxy Web Application Firewall (WAF) starts at $9.99/mo (depending on website need) and is designed to function as a protective layer sitting between your website and the internet. It filters visitors, patches outdated software, protects your site from DDoS attacks, and speeds your site load times.


CloudProxy is a Web Application Firewall (WAF) Intrusion Detection System (IDS) for websites. It is a cloud-based protective perimeter that any website owner can configure to shield their website and keep hackers from exploiting various website vulnerabilities. The technology is platform agnostic meaning it will support any type of web site platform (i.e., WordPress, Joomla, vBulletin, Magento, custom HTML, etc) and will work with any web server technology (i.e., Apache, Ruby, IIS, etc.. ).

It uses a proprietary approach to application profiling, malicious URL filtering, and anomaly detection on all traffic. All logs are maintained within the Sucuri infrastructure and monitored by our security operations team.

To learn more or sign up click the green button:

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*If you’re an existing client and would like to add CloudProxy to your cleanup suite, click here.

How does CloudProxy work

URL Filtering

The URL filtering function is similar in the way it works to a number of other firewalls, but is unique in it’s approach to it’s preventive layer. It uses a combination of whitelist and blacklist approaches, and introduces a concept of application profiling, unlike any other product currently on the market. As to be expected, the preventive layer protects against:

  • Cross Site Request Forgery (CSRF)
  • Cross Site Scripting (XSS)
  • Remote File Inclusions (RFI)
  • SQL Injection (SQLi)
  • Local File Inclusions (LFI)
  • Malicious post requests
  • Malformed cookie requests
  • Malformed headers
  • Layer-7/HTTP Denial of service attacks
  • Malicious or Improperly used bots
  • And other similar attacks…
Virtual Hardening

The main issue with hardening is that not everyone is technical enough to follow or understand the guidance. Especially when they see long posts like this one: WordPress Security – Cutting Through The BS or WordPress and Server Hardening – Taking Security to Another Level. The reality is that every one of the configuration changes is one potential new headache for the website owner. What works for one, doesn’t work for the other. Perhaps a host doesn’t allow a specific directive or disables specific functions. With CoudProxy, a user no longer needs to worry about making server level changes to harden their website, all changes are performed at the proxy level before any traffic touches your web server.

Virtual Patching

Virtual patching affords websites that are outdated (or with known vulnerabilities) to be protected from attacks by preventing exploitation of these vulnerabilities on the fly. This is usually done by either a firewall or intrusion detection system.

The term virtual patching was originally coined by Intrusion Prevention System (IPS) vendors a number of years ago. It is not a web application specific term, and may be applied to other protocols however currently it is more generally used as a term for Web Application Firewalls (WAF). It has been known by many different names including both External Patching and Just-in-time Patching. Whatever term you choose to use is irrelevant. What is important is that you understand exactly what a virtual patch is:

A security policy enforcement layer which prevents the exploitation of a known vulnerability.
The virtual patch works since the security enforcement layer analyzes transactions and intercepts attacks in transit, so malicious traffic never reaches the web application. The resulting impact of virtual patch is that, while the actual source code of the application itself has not been modified, the exploitation attempt does not succeed.

Access Control Mechanism

Second only to software vulnerabilities, Access is often the biggest vulnerability to everyday website owners. Attackers have learned to expedite their attacks by bypassing more complex software exploits and depending strictly on the weaknesses of everyday website owners. Things like poor passwords, open access to the world, etc.. often lead to a yellow brick road that everyday attacker can follow to easily gain access where they shouldn’t. To address this, we have built an access control mechanism to stop this vector dead in its tracks.

This mechanism empowers you, the website owner, with the ability to control who can access your website by implementing a whitelisting engine that allows you to define who can and can’t access your website administrator panels.

WordPress Sucuri Premium Plugin

We also offer a WordPress Plugin to all of our customers at no extra charge.

The plugin comprises the following features:
  • Integrity Monitoring. Receive notifications if any of your files are modified.
  • Audit Logs. Keep track of everything that happens inside WordPress, including new users, posts, login failures and successful logins.
  • Activity Reporting
  • 1-click Hardening. Easy-to-use hardening options for your site.


    • Sucuri helps me sleep at night knowing that our websites and user data is secure. Over the years, Sucuri has helped us detect and prevent major hack attempts. I recommend Sucuri to all of my clients and users because they offer the most comprehensive and cost effective WordPress security solution. I've done my industry research, and there's no one better than these guys.

      —Syed Balkhi, Founder, WPBeginner


    • Let's be honest: the web can be a scary place sometimes. Having done many a WordPress malware cleanup in my day, I've found Sucuri to do a better job than I ever hoped I could do. Not only are they thorough, but they're fast as heck and affordable to boot. You don't just walk into a bad situation without some protection. Sucuri *is* that protection.

      —Andrew Norcross, Founder & Lead Developer @Reaktiv Studios, WordCamp Speaker

      Reaktiv Studios

    • We partnered with Sucuri for our WordPress migration and dehacking services as their capabilities are significantly more comprehensive than anything we’ve seen in the industry.

      —Brian Clark, CEO of Coppyblogger Media


    • I like to think I know security, but there is only one company I trust when it comes to the security of my websites, that company is Sucuri. They are, in my opinion, hands-down the leader in web-malware protection and cleanup services. Trust the experts, hire these fools!

      —Brad Williams, Co-Founder WebDevStudios, Co-Author Professional WordPress Series


    • When you’re talking about protection for your WordPress site and the things most important to you — your content — you want to trust the experts. There’s really no better choice than the team at Sucuri.

      —Cory J. Miller – Founder / CEO of


    • Before Sucuri we didn’t know that someone was hacked until they told us. (Or actually, when Google blocked their site!) Now we find and fix problems before they even know what’s happening. It’s a Godsend, it’s as simple as possible, and it’s so affordable that quite frankly it’s irresponsible to not use them!

      —Jason Cohen, CEO of WP Engine

      WP Engine

    • As the owner of, a shared web hosting company, we are always fighting malware and spam. Recently we partnered with Sucuri and now all our accounts are monitored. I love this product! It not only protects our customers from malware, but these guys will fix a hack in 4 hours.

      —Carel Bekker, Owner/President of


    • Sucuri is my go to service for web based security and are the group that I recommend, exclusively, to my clients and readers, in particular WordPress users.  They are affordable, they work fast and they get the job done – as a bonus, they’re a fun group to work with!

      —Lisa Sabin-Wilson – Author: WordPress For Dummies; Designer, Co-Founder Allure Themes, Founder E. Webscapes

      E. Webscapes

    • Though I believe my sites are secure, it would be inexcusable for me not to use Sucuri’s service and be absolutely sure around the clock.

      —Scott Kingsley Clark, Lead Developer, Pods Framework


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