Overview
Imunify360 is a comprehensive security platform for Linux web servers, built by CloudLinux. Rather than being a standalone WAF, it integrates six layers of protection: a network firewall backed by global threat intelligence, WebShield for bot detection and DDoS mitigation, a ModSecurity-based WAF with proprietary managed rules, real-time malware scanning, a proactive PHP defense engine, and intrusion detection/prevention.
The WAF component uses ModSecurity under the hood but with Imunify's own curated ruleset, maintained and updated by their security team. This means hosting providers and site owners get WAF protection without needing to manage ModSecurity rules themselves. The WAF provides virtual patching for known vulnerabilities in WordPress plugins, themes, and other popular CMS software, blocking exploit attempts before official patches are available.
What sets Imunify360 apart from standalone WAFs is the Proactive Defense engine. It analyzes PHP script behavior at runtime, catching zero-day attacks that signature-based detection would miss. Combined with automated malware cleanup and compromised password resets, it handles the full lifecycle from prevention through remediation.
Imunify360 integrates with cPanel, Plesk, and DirectAdmin, and also runs standalone on Linux servers. A WordPress plugin provides site-level visibility into security status. The platform feeds a global threat intelligence network spanning 57 million+ domains, where an attack blocked on one server protects all others in the network.
Ratings Breakdown
Key Features
Managed WAF Rules
ModSecurity-based WAF with proprietary rules maintained by Imunify's security team. Automatically updated to cover new WordPress plugin vulnerabilities, CMS exploits, and emerging attack patterns.
Proactive Defense
Real-time PHP script behavior analysis that detects and blocks malicious activity during execution. Catches zero-day attacks that signature-based WAFs miss entirely.
Virtual Patching
Blocks exploit attempts against known vulnerabilities in WordPress plugins, themes, and CMS software before official patches are released or applied.
WebShield
Reverse proxy layer that filters bot traffic and mitigates DDoS attacks using invisible JavaScript challenges instead of traditional CAPTCHAs.
Automated Malware Cleanup
Detects and removes malicious code from files automatically, preserving the original file integrity. Includes database scanning for CMS infections.
Global Threat Intelligence
Feeds from 57M+ protected domains. An attack blocked on one server instantly protects all other Imunify-protected servers worldwide.
WordPress Plugin
Dedicated WordPress plugin providing site-level security dashboard, scan results, proactive defense status, and malware details directly in wp-admin.
Compromised Password Reset
Automatically forces password resets when it detects that cPanel or WordPress credentials were used in an attack, breaking reinfection cycles.
Pros & Cons
Pros
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Fully managed WAF rules
No rule writing or tuning needed. Imunify's security team handles WAF rule updates based on current threat intelligence.
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Goes beyond WAF
Six integrated security layers mean you get firewall, WAF, malware scanning, PHP runtime defense, and IDS/IPS in one package.
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WordPress-aware protection
Virtual patching for WordPress plugin vulnerabilities, WordPress-specific malware scanning, and a dedicated WordPress admin plugin.
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Low operational overhead
Automated malware cleanup, password resets, and rule updates reduce support tickets and manual security work significantly.
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Affordable for hosting providers
At $12-45/mo per server regardless of traffic volume, it is significantly cheaper than per-request cloud WAFs for high-traffic servers.
Cons
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Linux-only
No Windows, no macOS. Requires a Linux server with a supported distribution and optionally a control panel (cPanel, Plesk, DirectAdmin).
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Not a standalone WAF
You cannot buy just the WAF component. You get the full security suite or nothing. Overkill if you only need request filtering.
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Hosting ecosystem lock-in
Designed for shared hosting environments. Not suited for Kubernetes, serverless, or cloud-native architectures.
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No cloud proxy mode
Does not sit in front of your server like Cloudflare or Sucuri. Traffic must reach your server before Imunify can inspect it.
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Closed source
Proprietary software with no visibility into rule logic or detection internals. You trust their team to get it right.
Pricing
Pricing model: Per-server subscription, tiered by number of hosting accounts
Single User
Full security suite for a server with 1 hosting account
- All 6 security layers
- Managed WAF rules
- Proactive Defense
- Automated malware cleanup
- 24/7 support
Up to 30 Users
For shared hosting servers with up to 30 accounts
- All Single User features
- Multi-account support
- CloudAV for reduced CPU usage
- WordPress plugin
Up to 250 Users
For larger shared hosting environments
- All features included
- Scales to 250 hosting accounts
- Fleet management CLI
Unlimited
Unlimited hosting accounts per server
- All features included
- Unlimited accounts
- Priority support
- Centralized monitoring dashboard
Our Verdict
CVE Coverage
Imunify360 can detect and block attacks matching 85K+ known CVEs based on its supported rule sets.
Coverage by Attack Type
Latest Blockable CVEs
| CVE | Severity |
|---|---|
| CVE-2026-6603 | HIGH |
| CVE-2026-6602 | HIGH |
| CVE-2026-6600 | LOW |
| CVE-2026-32963 | UNKNOWN |
| CVE-2026-6596 | HIGH |
| CVE-2026-6595 | HIGH |
| CVE-2026-6594 | HIGH |
| CVE-2026-6593 | LOW |
| CVE-2026-6592 | LOW |
| CVE-2026-6591 | MEDIUM |
Frequently Asked Questions
Is Imunify360 a WAF?
Imunify360 is not a standalone WAF. It is a comprehensive server security platform that includes a WAF as one of six integrated defense layers. The WAF component runs on ModSecurity with Imunify's own proprietary ruleset, maintained and updated by their security team. You cannot purchase the WAF separately from the full suite.
The other five layers are: a network firewall backed by global threat intelligence, WebShield for bot filtering and DDoS mitigation, a proactive PHP runtime defense engine, malware scanning with automated cleanup, and intrusion detection/prevention. These layers work together, which is what differentiates Imunify360 from pure WAF products.
Does Imunify360 work with WordPress?
Yes, and WordPress protection is one of Imunify360's strongest areas. The WAF provides virtual patching that automatically blocks exploit attempts against known vulnerabilities in WordPress plugins and themes before official patches are released. The malware scanner checks both files and databases for WordPress-specific infections.
There is also a dedicated WordPress plugin that gives site administrators a security dashboard directly in wp-admin, showing scan results, proactive defense status, and detected threats. For a comparison with WordPress-native security plugins, see our Best WAF for WordPress guide.
How does Imunify360 compare to Wordfence?
Wordfence is a WordPress plugin that runs inside WordPress itself, giving it deep visibility into user sessions and authentication states. Imunify360 operates at the server level, protecting all sites on the server simultaneously, not just a single WordPress installation.
Imunify360 includes layers that Wordfence does not offer: a network firewall, PHP runtime behavior analysis (Proactive Defense), and automated malware cleanup with compromised password resets. Wordfence, on the other hand, has a more mature WordPress-specific rule engine and a larger community around WordPress security.
Many hosting providers run both: Imunify360 at the server level and recommend Wordfence to their customers as a per-site plugin for defense in depth. See the full Imunify360 vs Wordfence comparison.
How does Imunify360 compare to Sucuri?
Sucuri is a cloud-based WAF and CDN that filters traffic at the edge before it reaches your server. Imunify360 runs on the server itself. This means Sucuri can stop DDoS attacks and malicious traffic before it hits your infrastructure, while Imunify360 provides deeper server-level protection including PHP runtime defense and file-level malware scanning.
Sucuri is better suited for individual site owners who want managed cloud security. Imunify360 is designed for hosting providers protecting hundreds or thousands of sites on a single server. See the full Imunify360 vs Sucuri comparison.
How does Imunify360 compare to BitNinja?
BitNinja is the closest competitor to Imunify360 in the server security space. Both target hosting providers with multi-layered server protection, both include WAF and malware scanning, and both operate at the server level rather than the application level.
Key differences: Imunify360 has the Proactive Defense PHP runtime engine (unique in this space), while BitNinja emphasizes its Defense Network and honeypot system. Imunify360 is backed by CloudLinux (deep integration with CloudLinux OS), while BitNinja is independent. Pricing models differ: Imunify360 charges per hosting account count, BitNinja charges per server. See the full BitNinja vs Imunify360 comparison.
Can I use Imunify360 with Cloudflare?
Yes. Imunify360 and Cloudflare complement each other well. Cloudflare operates as an edge proxy handling CDN caching, DDoS mitigation, and basic WAF rules before traffic reaches your server. Imunify360 then provides server-level protection with its managed ModSecurity WAF, PHP runtime defense, and malware scanning.
Imunify360's WebShield supports CDN passthrough configurations and correctly handles forwarded IP headers from Cloudflare, so both services work together without conflicts. This combination is common among hosting providers who want both edge and server-level protection. See the full Cloudflare vs Imunify360 comparison.
Ready to try Imunify360?
Visit the website to learn more or request a demo.