Shield Security – Smart Bot Blocking, Brute-Force Login Protection & File Scanning vs WP Simple SpamCheck

Most security plugins hand you a dashboard full of alerts and expect you to know what to do next. Shield works differently. It blocks threats automatically, repairs what it can on its own, and then shows you exactly what still needs your attention — ranked by impact, not volume. Less noise. More action. 🤖 Security That Runs Itself The most powerful thing Shield does is what it handles without you: Automatic IP Blocking — every visitor is quietly scored as they interact with your site. Failed logins, firewall blocks, silentCAPTCHA failures, and other signals accumulate into a reputation score. When a visitor’s score crosses the threshold, Shield blocks them — automatically, without you lifting a finger Automatic File Repair — when a file integrity scan finds a changed WordPress core file, Shield pulls the original from WordPress.org and restores it. Detected and fixed, without waiting for you to act Automatic Bot Recognition — Shield identifies legitimate crawlers (Google, Bing, DuckDuckGo, Yandex, Apple) and known services (ManageWP, Pingdom, Stripe, CloudFlare) and never blocks them. Your SEO and monitoring tools keep working 🧭 Guided Security, Not Just a Dashboard Shield organises your security into four focused areas so you always know where to look: Queue — things that need your attention, ranked by priority. Not everything at once — just what matters right now Investigate — dig into blocked IPs, security events, and the specific signals that triggered each one Configure — guided setup for each protection area, with clear recommendations matched to your site Reports — a clear view of what Shield has blocked, detected, and repaired over time The goal: guide you quickly towards action, not bury you in data. 🛡️ Free Protection Bot Blocking & Firewall silentCAPTCHA — blocks bad bots on login, registration, lost password, and comment forms using passive signals invisible to real visitors. No CAPTCHA keys. No external requests. No JavaScript that breaks your forms. Everything runs on your server (GDPR friendly). Firewall rules blocking common WordPress attack patterns — SQL injection probes, known exploit signatures, suspicious request parameters XML-RPC protection — disable or restrict entirely, including pingbacks and trackbacks REST API firewall — block unauthenticated requests Fake crawler detection — identifies bots spoofing legitimate search engines Login & Account Security Two-factor authentication (2FA) — email codes, Google Authenticator, or YubiKey OTP for all users Brute force protection with configurable login attempt limits and cooldown Session locking — tie sessions to a browser or IP to stop account theft after a successful login User enumeration blocking — closes off ?author= probes used to harvest usernames before an attack Scanning & Integrity Core file scanning — compares WordPress core against official checksums and repairs changed files automatically Suspicious PHP detection — flags PHP files in locations where they have no business being Abandoned plugin detection — identifies unmaintained plugins most likely to carry unpatched vulnerabilities Visibility & Control Security Admin PIN — lock Shield’s own settings so other administrators cannot quietly weaken your configuration Security activity log — logins, user changes, plugin and theme events, post edits, and suspicious requests: Everything in one clear view IP Rules — automatic & manual block and bypass rules, CIDR range support, full per-IP request history 🤝 CrowdSec Integration Shield is the only WordPress security plugin with a native CrowdSec integration. CrowdSec aggregates threat signals from millions of sites into a shared IP reputation network — your site blocks known attackers before they ever probe you, using intelligence far beyond your own traffic history. ✨ ShieldPRO Passkeys — phishing-resistant, passwordless login for users Backup login codes — emergency 2FA access when a device is lost AI-based malware scanner — detects known and unknown PHP malware Plugin & theme file scanning — compares installed files against WordPress.org originals, flagging unauthorised changes Vulnerability scanning — active checks across all installed plugins and themes Broader spam protection — WooCommerce, EDD, Contact Form 7, Ninja Forms, Elementor, and more Traffic rate limiting — cap request rates per IP to absorb high-volume bot floods User suspension — manual or automatic suspension of idle accounts MainWP integration White Label — rename and rebrand Shield for client sites Who It’s For Shield suits site owners, agencies, and MSPs who want protection that runs itself — not a plugin that demands constant attention to be useful. If you have been burned by security plugins that generate more noise than protection, or dashboards that tell you everything is wrong without telling you what to fix, Shield was built to be the alternative.

This plugin allows WordPress to block over 95% of spam comments using a time-based hash. This allows for a minimum sanity check and yet should remove almost all spam comments without the need to sign up to any third party APIs. The plugin has been tested in real world conditions for around 12 months. It will not block real comments and it is pretty effective against spam, however it only uses a very simple algorithm and for that reason some spam comments may still make it through.