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Free Plugin by quttera v4.1.0.31

Quttera ThreatSign

WordPress multi-level security scanner detecting malware, 0-day threats, brute-force attacks, bot attacks, and unauthorized admin changes.

Quttera ThreatSign

The facts

Rating
3.9★ from 47
Active installs
10k+
Price
Free
Last updated
27 Aug 2026
Added
Jun 2012
Requires WP
3.3.2
Tested up to
WP 7.1
Requires PHP
7.2
Downloads
4,664,160

Our analysis

AI-assisted

Quttera ThreatSign is a WordPress plugin designed to enhance website security through malware scanning and protection. It uses an AI-driven heuristic engine to detect various types of malware, including malicious PHP, obfuscated JavaScript, and checkout skimmers. The plugin allows for on-demand scans from the WordPress admin and checks against over 40 global security authorities.

In addition to malware detection, Quttera ThreatSign offers brute force protection, bot protection, and real-time monitoring of admin user activities. It provides features such as IP locking, rate limiting, and alerts for unauthorized changes. This plugin is suitable for WordPress site owners who want to improve their site's security and protect against automated attacks.

Best for: WordPress site owners looking to enhance their website's security.

What it does well

  • AI-driven heuristic engine for malware detection
  • On-demand scans from WordPress admin
  • Brute force and bot protection features
  • Real-time monitoring of admin user activities
  • Checks against over 40 global security authorities

Where it falls short

  • Limited information on automated malware removal features
  • No details on customer support beyond email contact

Verdict

Quttera ThreatSign provides a comprehensive set of security features for WordPress users. It is a useful tool for those concerned about malware and unauthorized access.

From the developer

quttera's own description of Quttera ThreatSign, lightly tidied.

Quttera ThreatSign protects your WordPress website with multi-layered security:

Malware Detection: Powered by Quttera’s AI-driven heuristic engine, the scanner detects malicious PHP, obfuscated JavaScript, hidden iframes, redirects, spam, SEO malware, and credit-card skimmers targeting checkout pages. The plugin performs on-demand scans directly from your WordPress admin and checks your domain against more than 40 global security authorities, including Google, McAfee, Norton, and Yandex. Detection capabilities are continuously enhanced using insights from Quttera’s worldwide threat intelligence network.

Brute Force Protection: Prevents unauthorized login attempts with IP locking, configurable rate limiting, and environment-aware protection policies. Supports both shared hosting (aggressive locking) and dedicated servers (progressive delays). Includes emergency bypass mechanism for critical situations.

Bot Protection: Layered defense against automated attacks using multi-stage risk evaluation, token-bucket rate limiting, and legitimate bot recognition (Googlebot, Bingbot, etc.). Protects REST API, XML-RPC, and WooCommerce endpoints with endpoint-specific risk scoring.

Admin User Monitoring: Real-time detection and alerting for unauthorized admin additions, removals, and role changes with database audit trail and snapshots.

For complete protection—including automated malware removal, scheduled scanning, WAF, and 24/7 monitoring—you can upgrade to a ThreatSign Website Security plan.

Malware Detection Features:

  • One-click on-demand scans from WP admin
  • 0-day (unknown threat) detection via heuristic & behavioral analysis
  • Detection of malicious PHP (backdoors, shells, injections)
  • Detection of obfuscated or polymorphic JavaScript
  • Identification of malicious iframes, redirects & hidden links
  • Detection of spam & SEO malware
  • Checkout skimmer detection
  • Inspection of WordPress core file integrity
  • Detection of alien or unauthorized files in core directories
  • External links and outbound reference analysis
  • Blacklist checks across 40+ security authorities
  • Cloud-based scanning to reduce server resource load
  • Detailed investigation reports with severity levels

Brute Force Protection Features:

  • IP-based locking with configurable thresholds
  • Multi-stage failure detection with soft and hard locks
  • Environment-aware policies for shared hosting and dedicated servers
  • IP whitelist/blacklist with CIDR notation support
  • Emergency bypass mechanism via constant or filter
  • User account lockout alerts via email
  • Combo-lock (IP + username) detection
  • Rate limiting with progressive delays

Bot Protection Features:

  • Multi-stage risk evaluation with heuristic analysis
  • Token-bucket rate limiting across multiple lanes (global, REST, XML-RPC, checkout, cart)
  • Legitimate bot recognition (Googlebot, Bingbot with elevated rate limits)
  • REST API enumeration and authentication protection
  • WooCommerce endpoint protection (checkout & cart)
  • Configurable operation modes (Observe, Balanced, Aggressive)
  • Risk-based challenge mechanisms and exponential backoff

Admin User Monitoring Features:

  • Real-time detection of admin user additions and removals
  • Admin role change tracking
  • Database snapshot comparison for audit trail
  • WP-Cron scheduled checks (1-minute intervals)
  • Immediate detection via WordPress hooks
  • Email alerts for unauthorized changes
  • Comprehensive alarm system integration

If you need malware removal assistance, contact us at support@quttera.com or sign up for any
of our ThreatSign annual plans, which include cleanup & blacklist removal:
https://quttera.com/anti-malware-website-monitoring-signup

Credits

Read the full description on the official page →

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