Quttera ThreatSign – Web Malware Scanner for WordPress

What is Quttera ThreatSign?

Quttera ThreatSign is a multi-layered WordPress security plugin focused on detecting card skimmers, malware, and brute force attacks. Developed by the security firm quttera, this plugin has been protecting websites for 14 years. It currently holds 10K+ active installs with a 3.9/5 rating from 47 reviews. The rating split reveals a polarized user base: 70% 23% one-star ratings. The current version is 4.1.0.20, last updated on Jul 2, 2026.

The plugin uses Quttera's patented AI-driven heuristic engine for malware detection. It scans for malicious PHP, obfuscated JavaScript, hidden iframes, redirects, and credit-card skimmers targeting checkout pages. Users concerned about how to remove malware from wordpress site will find the on-demand scan reports useful. The free version provides detection only, while automated removal requires a paid ThreatSign plan.

Key Features of Quttera ThreatSign

• Card Skimmer Detection – Identifies malicious code injected into WooCommerce checkout pages, making it a strong contender for the best card skimmer plugin wordpress search.
• AI-Driven Malware Scanner – Detects 0-day threats, backdoors, PHP shells, and obfuscated JavaScript using behavioral analysis.
• Blacklist Monitoring – Checks your domain against 40+ security authorities including Google, McAfee, and Norton.
• Brute Force Protection – Uses IP-based locking, configurable rate limits, and multi-stage failure detection to detect brute force attacks wordpress users face daily.
• Bot Protection with Token Buckets – Rate-limits REST API, XML-RPC, and WooCommerce endpoints while recognizing legitimate bots like Googlebot.
• Admin User Monitoring – Alerts you in real-time when admin accounts are added, removed, or have role changes, with a database audit trail.
• Cloud-Based Scanning – Offloads scan processing to reduce server resource load, ideal for shared hosting environments.

Who Should Use Quttera ThreatSign?

Quttera ThreatSign suits site owners who want a wordpress malware scanner with real-time brute force and bot protection built in. The free version is ideal for beginners or small ecommerce stores that need card skimmer detection wordpress users rely on for checkout security. With 10K+ active installs, it has a modest but dedicated user base. The 70% five-star rating suggests many find value in the detection engine and layered defenses.

Advanced users or agencies managing multiple sites may prefer the paid upgrade for automated malware removal and scheduled scans. The plugin supports WordPress 3.3.2+ and PHP 7.2+, so it works on most hosting setups. The 23% one-star ratings likely stem from the free version's limitation to detection only, requiring a paid plan for full remediation.

Installation & Setup

Installation follows the standard WordPress plugin process: download, upload, and activate. The plugin works immediately with no configuration required for basic scanning. For brute force and bot protection, you can adjust IP whitelists, rate limits, and operation modes from the settings panel. The setup is beginner-friendly, with clear options for shared hosting (aggressive locking) versus dedicated servers (progressive delays).

Support & Community

Support data from the last two months shows 1 open thread and 1 resolved thread, giving a 100% resolution rate. This suggests the developer responds quickly to issues, though the low volume indicates a mature plugin with few critical bugs. The rating breakdown of 70% 23% one-star reveals a divide: satisfied users praise the detection accuracy, while detractors likely expect free removal features. The plugin's 14-year history demonstrates long-term maintenance, with the 4.1.0.20 update in Jul 2, 2026 showing active development.