BotBlocker Security – Firewall & Bot Protection
BotBlocker Security blocks 99% of automated attacks before WordPress even loads. No bloat, no slowdowns, no monthly fees for core protection. If your site is hit by login brute force, spam comments, fake Googlebots, content scrapers, or XML-RPC floods, you are not alone: bots generate over 47% of all web traffic. Most security plugins react after WordPress boots, wasting CPU and memory on every bad request. BotBlocker stops them at the door. Why site owners switch to BotBlocker Faster than the competition. Runs on early init through three interception layers, before themes and plugins load. Server load drops during attacks instead of spiking. Smarter CAPTCHA. 9 modes including Silent Auto-Verify – zero clicks for humans, hard wall for bots. Proprietary CAPTCHAs defeat AI-based solvers that crack reCAPTCHA for $2-3 per 1 000. Honest free version. Full firewall, all 9 CAPTCHA modes, full 2FA, full logging, full Multisite support. No nag screens, no crippled features. Privacy-first. No visitor data leaves your server. GDPR and CCPA compliant out of the box. Works with everything. Cloudflare, WP Rocket, LiteSpeed, WooCommerce, Elementor, multisite, IPv6, PHP 7.4 to 8.5. 🛡️ Core Firewall (Free) Three-Layer Architecture – intercepts traffic at wp-config.php (before WordPress), MU-plugin phase, and main shield. The first layer blocks known threats without loading WordPress at all, saving 30-100ms and 5-20MB RAM per blocked request. Web Application Firewall (WAF) with real-time rule updates via the BotBlocker Threat Defense Feed 2 899 User-Agent signatures – largest blacklist among WordPress plugins – covering Scrapy, Selenium, Puppeteer, PhantomJS, curl, wget, Python, Java, Perl, and SQL injection tools Brute force protection with progressive lockouts – 5 attempts per 15 minutes, escalating bans for repeat offenders Anti-spam for comments, registration, contact forms – spammers blocked before they connect XML-RPC and REST API locked down by default with allowlist for trusted services Fake crawler detection via FCrDNS (dual-direction DNS verification), ASN tokens, and published IP ranges – 95% effective, impossible to spoof without controlling the provider’s DNS zone LLM / AI crawler management – allow or block GPTBot, ChatGPT-User, ClaudeBot, PerplexityBot, Bytespider via CIDR-verified IP ranges. Trusted crawlers verified, impersonators blocked. Country, ASN, IP range, User-Agent, Referer blocking rules with instant enforcement Cloudflare-aware real-IP resolution and origin bypass protection Full IPv6 support – separate tables and logic for IPv4 and IPv6, every feature works with both Live traffic monitor with attack map, country, ASN, device, browser, and exact block reason for every request Built-in caching via Redis and Memcached – free, auto-disable on connection failure 🔒 Login Security & 2FA (Free) Two-Factor Authentication compatible with Google Authenticator, Authy, 1Password, Bitwarden – TOTP standard with 10 backup codes 9 CAPTCHA modes: Silent Auto-Verify, Single Button, Color CAPTCHA, Images CAPTCHA, Shapes CAPTCHA (60fps Canvas), Digits CAPTCHA, Hold Button CAPTCHA, plus Google reCAPTCHA v2 and v3 Hybrid Mode – combine any internal CAPTCHA with reCAPTCHA v3 for two-layer invisible defense Hide login URL (PRO) Configurable lockout durations with escalation for repeat offenders – failed CAPTCHA triggers short ban, repeated failure triggers 24-hour ban 💳 Payment Gateway Bypass (Free) Auto-detects 25+ e-commerce platforms (WooCommerce, Easy Digital Downloads, SureCart, MemberPress, Paid Memberships Pro, Give, Dokan, CartFlows, FunnelKit, and more) and 150+ payment providers (Stripe, PayPal, Mollie, Adyen, Braintree, Square, Razorpay, Klarna, Paddle, Authorize.Net, 2Checkout, YooKassa, LiqPay, and more). Webhooks, IPN callbacks, and payment notifications never get blocked. Four detection layers ensure zero false positives on payment traffic. 📊 Visibility & Control (Free) Visual dashboard with attack map, top offenders, blocked-vs-allowed ratio, world traffic map Detailed event log with IP, country, ASN, User-Agent, and exact block reason – 54 unique event codes Health Score gauge – 42 parameters across 3 categories, 5 security levels from Critical to Secure 3 security presets – Light, Strong, Full – one-click configuration Setup Wizard – 8 steps from welcome to test attack, setup in under 5 minutes 8 interface languages – English, Deutsch, Español, Français, Polski, Русский, Українська + POT template Configurable retention with timezone and DST awareness Clean uninstall – drops all 16 tables, removes 40+ options, clears cron hooks. Zero leftover data. 🚀 PRO Adds (Premium / Pro / Ultimate) Real-time cloud threat intelligence cross-checked against global databases – 5M+ attack IPs, hundreds of thousands of bot signatures, updated daily Zero-day behavioral and heuristic detection – catches unknown attack patterns before signatures exist VPN, Tor, proxy, ASN, and hosting reputation checks Early Init Mode – filtering before WordPress Core loads, maximum resource savings during attacks Hide Login URL addon – custom admin URL, hardened wp-login.php protection Security Headers addon – HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy, X-Content-Type-Options Speed Up WordPress addon – 14 frontend and server optimizations Malware Scanner addon – 25 patterns scanning files + 7 database tables, detects webshells, eval injections, base64-obfuscated code hidden in wp_options and post_content Priority support – 24-hour response time Four plans to match your traffic: Premium ($12/month, 25k cloud checks), Pro ($50/month, 100k cloud checks), Ultimate ($100/month, 250k cloud checks + emergency 24h support). Annual billing includes 1 month free. 30-day refund policy. Licensed per domain, billed securely via Freemius. Compare plans → ⚡ Performance & Compatibility Zero database queries for returning visitors – 9 runtime PHP files with SHA-256 integrity signatures, loaded via include Measured overhead: +3-15ms TTFB for cached visitors, +50-200ms for first-time PTR lookups, +2-4MB memory Redis and Memcached support – free, auto-disables gracefully on connection failure Cache plugin compatibility – automatic DONOTCACHEPAGE and Cache-Control: no-store on verification pages. Works with WP Super Cache, W3 Total Cache, WP Rocket, LiteSpeed Cache, Hummingbird, WP Fastest Cache, Cache Enabler CDN and WAF compatibility – Cloudflare, Sucuri, Incapsula, AWS CloudFront, Fastly, KeyCDN, StackPath. Multi-header real-IP resolution (CF-Connecting-IP, X-Forwarded-For, X-Real-IP) DDoS Protection Compatibility – automatic detection of JS-challenges from DDoS-Guard, Stormwall, Qrator. HMAC-signed AJAX responses, Circuit Breaker with automatic retry and backoff. BotBlocker is the only WordPress plugin that works correctly behind aggressive DDoS protection without manual configuration. Multisite Support – network activation, per-site data, per-site cleanup. Free on all plans. PHP 7.4 – 8.5 – tested across 7 PHP versions. WordPress 5.0 – 7.0+. Linux and Windows. GDPR and CCPA compliant – no PII collected, technical parameters only, Legitimate Interest basis (Art. 6(1)(f)) 🤝 Trusted by 3 000+ active installations Translated into 8 languages Tested up to WordPress 7.0 and PHP 8.5 Developed and maintained by GLOBUS.studio “Replaced two security plugins and a CAPTCHA plugin with one. Site is faster and the spam stopped overnight.” – WordPress.org user Privacy BotBlocker Security does not collect or process personal data of your visitors. All cloud analysis is performed on technical parameters only (IP, headers, User-Agent). No personally identifiable information is collected, stored, or transmitted to any external service. Support and Documentation Product site: https://botblocker.top/products/ Pricing and PRO plans: https://botblocker.top/pricing/ Documentation: https://botblocker.top/docs/ Contact/support: https://botblocker.top/contacts/ Community: https://botblocker.top/community/ License This plugin is licensed under the GPLv2 or later. See LICENSE.txt for details. Credits & Authors BotBlocker Security is developed and maintained by GLOBUS.studio. Concept, architecture & code – Yevhen Leonidov: https://leonidov.dev/ Code, code review – Andrii Lukashevych Code, translations – Aleksandr Kinakh BotBlocker Security – The first line of defense for your WordPress site.
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La Sentinelle antispam
Feel safe knowing that your website is safe from spam. La Sentinelle will guard your WordPress website against spam in a simple and effective way. It has antispam filters for comment forms and registration forms and can be extended to support plugins. The default settings should catch most spambots, and there is a settingspage to set it up according to your wishes. Current features include: 3 antispam features; Honeypot, Nonce, Form Timeout. These 3 spamfilters depend on JavaScript on the frontend. 1 antispam feature; Stop Forum Spam. Settingspage to set things up according to your wishes. Transparent to the visitor, no nagging with Captcha’s or other annoying things. By default no use of third-party services and no tracking of visitors. Lightweight and simple code. Logging for WordPress Comments and which spamfilter marked it as spam. Logging for Custom forms and which spamfilter marked it as spam. Statistics for every form how many spam submissions were blocked. WordPress forms that are protected: WordPress Comments form. WordPress Login form. WordPress Register form. WordPress Lost Password form. Form Plugins that are protected: Caldera Forms. Clean Login (Login form). Contact Form 7. Easy Digital Downloads (Login form, Register form). Everest Forms. Formidable Form Builder. Forminator. Newsletter Optin Box plugin (noptin) (standalone forms). Ultimate Member (Login form, Register form and Lost Password form). WooCommerce (Login form, Lost Password form). WPForms Lite. WP Job Manager plugin (submit job form when registering is enabled). Support If you have a problem or a feature request, please post it on the plugin’s support forum on wordpress.org. I will do my best to respond as soon as possible. If you send me an email, I will not reply. Please use the support forum. Translations Translations can be added very easily through GlotPress. You can start translating strings there for your locale. They need to be validated though, so if there’s no validator yet, and you want to apply for being validator (PTE), please post it on the support forum. I will make a request on make/polyglots to have you added as validator for this plugin/locale. How to choose an antispam plugin When you look through the WordPress Plugin Repository you will see more than a hundred antispam plugins. Which one is the best one? Short answer, there is no “best one”. No spamfilter and no method for spamfiltering is perfect. Slightly longer answer, you could try about twenty and choose the one that fits your needs best. But there is also a really long answer. There are different methods that can be used against spam, and every method has its drawbacks. In my opinion, having a low number of false positives is more important than perfectly marking all spam, you don’t want to miss out on important people or information. Nagging the user in some way has a similar effect, the user might not even want to bother with that and just walk away. Third party services: Services like Akismet, OOPSpam, Stop Forum Spam and also reCAPTCHA offer third party services to check for spam. This can be very effective, but you are giving user submitted data away to these third parties and are also giving your users up for tracking them. Captcha’s, reCAPTCHA and Quizz Questions: You are annoying your users and probably sending some of them away. This especially counts for reCAPTCHA for visitors who have third party cookies disabled. Blacklists: Often running behind the facts. That goes for the way of getting users off that list, and also in getting users on that list. Referer check: check if the Referer header is set correctly. You can never trust it is set correctly. Modern browsers are limiting the use of Referers, though for now that is mostly for third-party domains. JavaScript methods: Spammers often (always?) don’t use JavaScript, they just post the form with spammy data. Drawback for this method is that statistics say that about 1 percent of users has JavaScript disabled. Also, some websites have broken JavaScript, which might make the spamfilter break as well. Activation email for registering users. Users only get activated after clicking a link in an activation email. You still have all the non-activated users in your site however. You could have a bright idea about combining several methods, but then you get the drawbacks of all the methods you use. Another complication of choosing a good plugin is that most antispam plugins don’t tell you what methods they use. The documentation doesn’t tell you, and looking at the source code just leaves you confused at the chaos that it often is. My main motivation for writing this plugin is to offer a plugin that does spamfiltering with JavaScript methods in a simple and effective way. The claimed 1 percent of users that has JavaScript disabled will also be tech-savy enough to enable it again for your website. Compatibility This plugin is compatible with ClassicPress. Contributions This plugin is also available in Codeberg.