Email OTP Authenticator – Login, Register, 2FA & Session Lock vs Security Plugin, Firewall & Malware Scanner with Auto Removal

Email OTP Authenticator is a lightweight authentication plugin for WordPress that combines passwordless login, quick registration, optional 2FA and session protection into one flexible solution. Built using independent security layers instead of a monolithic system, the plugin loads only the required components during use to keep runtime execution compact and avoid external service dependency. Delivering these key benefits: Reduce login friction Increase signup conversions Reduce password reset requests Strengthen multi-layered website security Enhance user trust with secure authentication Designed to make WordPress authentication faster, smarter and more secure. Authentication Layers The plugin is engineered around three dedicated security Layers: Access Layer Handles secure user entry through passwordless authentication. Features: * OTP Login * OTP Registration * Guest Verification * Email authorization * Fast Authentication Flow Validation Layer Adds identity confirmation and verification controls. Features: * New Device detection * Auto-popup with UI lock * Parallel login validation * Two-Factor Authentication * Login Validity Enforcement Security Layer Protects active sessions and detects abnormal activity. Features: * Dynamic Session Shield * Session Validity Check * Session Inactivity Lock * Adaptive 2FA Enforcement * Suspicious Activity Guard Lightweight By Design Built to stay lightweight. Although the complete package includes templates, images and supporting resources for setup and compatibility, the actual authentication runtime remains compact. Admin Browser Load: ~97 KB Admin PHP Runtime: ~564 KB Frontend Browser Load: ~68 KB Frontend PHP Runtime: ~274 KB Templates & visual assets: ~2.1 MB Distribution package (zipped): ~2.3 MB Distribution package (unzipped): ~3.6 MB Only required components are loaded during use. No external APIs, frameworks or unnecessary scripts. Plugin runtime execution is highly optimized and fast. However, overall performance also depends on external factors. Key Highlights Quick Login & Signup – Instant, easy, and password-free; Login & signup with OTP. Built-in Two-Factor Authentication – Additional identity protection layer. Verified Access Control – Verify visitors without account for access to restricted pages. Adaptive Session Shield – Intelligent session protection engine. Zero External Dependency – Works without third-party services. Modern Vanilla JavaScript – No jQuery dependency. Flexible Integration Options – Add authentication anywhere. Complete Admin Control – Fine-tune authentication behavior. Built-in Interface System – Attractive ready-to-use templates. Lightweight & Fast – Optimized for performance. Flexible Integration Options Add authentication forms anywhere on your website using simple integration methods. Integration methods include: Shortcode integration (auto-popup, popup or inline forms) Menu trigger integration (popup forms) Redirect support for auto-popup & inline form pages Multiple forms on the same page Easy setup without coding complexity Built-in Templates Attractive 27 ready-to-use templates with auto-popup, popup and inline support. Easy-to-apply modern designs that match your website style, with options to customize pre-built templates or create your own. Complete Admin Control Customize authentication behavior, layout options, security restrictions and verification rules with ease. Admins gain complete control over user access and interaction across the website. Zero External Dependency Run a complete authentication system without relying on any third-party services. Full data control Standalone operation No external APIs required Self-hosted OTP processing Reliable authentication flow Modern Architecture Built using modern development practices: Vanilla JavaScript implementation (no jQuery) Modular resource loading Secure token validation Compact runtime execution Optimized performance structure Ideal Use Cases This plugin is ideal for: Membership websites WooCommerce stores SaaS dashboards Community platforms Agencies managing client websites Developers needing flexible authentication Beginners and small websites needing simple security Designed to scale from beginner websites to enterprise environments. Compatibility Works smoothly with popular WordPress tools: WooCommerce Ultimate Member MemberPress BuddyPress ProfileGrid ProfilePress User Registration WP User Manager Paid Memberships Pro RegistrationMagic Forminator Login/Signup Popup plugins And many more Why Choose This Plugin FAST – Quick OTP authentication process FRIENDLY – Simple user experience SMART – Intelligent access handling SMOOTH – Clean UI integration SECURED – Strong authentication protection Basic Mode and Advanced Features Explore the default basic mode screenshots below, designed to be simple and beginner-friendly for non-technical admins. For screenshots of advanced integrations, customization, and extended functionality, visit the Plugin Showcase. Support Feedback helps improve this plugin. Send suggestions or issues to: [email protected] Notes This is the Lite version with advanced features included for exploration. Visit the plugin homepage to discover everything available across editions.

Brute force, Login security & Two Factor Auth (2FA). Limit login. Malware & Vulnerabilities scan. FireWall. Enterprise ready security plugin. SECURITY PLUGIN BY CLEANTALK (SPBCT) We focus on eliminating the most common security threats for WordPress. At the same time, we strive to ensure that site performance remains unaffected. To achieve this, each release goes through automated and expert-driven testing pipelines. We also verify performance using Google PageSpeed Insights and GTMetrix. Typically, we release a new version twice a month to keep features up to date and protection strong. SECURITY FEATURES Limit Login Attempts and rate limits for logins. Two Factor Authentication (2FA) Custom wp-login URL (wp-login.php) Hide Login Default Login Page Disable or Stop User Enumeration Brute force protection for WordPress accounts and passwords Security Protection for WordPress login form Security FireWall by IP, Networks, or Countries Web Application Firewall (WAF) Real-time traffic monitor (Visitors per pages, IPs, Countires and hits counts per page) Malware scanner with auto-cure function Daily auto malware scan Vulnerabilities scanner among installed plugins and themes Security weekly reports to email Notifications of login events to your website FREE TRIAL THEN $9 PER YEAR CleanTalk is a Cloud security service that protects your website from online threats and provides you great security instruments to control your website security. We provide detailed security stats for all of our security features to have a full control of security. We believe the most honest approach is when every user pays a small fee for using the service, rather than relying on a freemium model where some users subsidize others. The fee is as low as price of a good cup of coffee! So, the security plugin does not have a PRO version-it is completely free and works in combination with our premium Cloud security service at cleantalk.org. Every user has full access to all features of both the service and the plugin. Also, please take a note about WordPress.org policy BRUTE FORCE PROTECTION Our default anti–brute-force policy works as follows, For any failed login attempt to the WordPress admin area, the plugin introduces a brief delay of a few seconds. The plugin reviews the security audit log every hour. If any IP address records 10 or more login attempts in that period, it will be blocked for 24 hours. ALL BRUTE FORCE PROTECTION FUNCTIONS Maximum failed attemtps to login before ban (default is 5). A failed attempt happens when either the login or password is incorrect. Time frame to count login attempts (default is 15 minutes). Ban to login time frame from 2 minutes to 24 hours (default is 1 hour). Two-factor authentication (2FA) with abillity to apply policy to specific users roles. Prevent collecting of login on password reset error. The option exclude the info about the login existing on password change error. Error message will be replaced with followed text: “If the user with the specified credentials exists, check your email for the password reset confirmation link. Then visit login page.” Security Audit Log. Keeps track of actions in the WP Dashboard to let you know what is happening on your blog. With the Security Audit Log is very easy to see user activity in order to understand what changes have done and who made them. Security Audit Log shows who logged in and when and how much time they spent on each page. Two Factor Authentication (2FA). It requires a bit of your time but Two Factor (2 Step) Authentication immediately gives a much higher level of security.With your first authorization, the CleanTalk Security plugin remembers your browser and you won’t have to input your authorization code every time anymore. However, if you started to use a new device or a new browser then you are required to input your security authorization code. CleanTalk security plugin will remember your browser for 30 days. Change the URL of the wp-login page. This option helps you change the default wp-login URL (wp-login.php). Hackers use scripts for massive brute-force attacks, and since most sites use a default login page URL, hackers configure scripts for such URLs. When you change the URL of the authorization page, hackers will not have the opportunity to perform brute-force attacks in scripts in automatic mode. This option does not change files and does not rewrite URLs in system files. To return the address of the default authorization page, it is enough to disable the option in the plugin settings or set a new value. If you are using caching plugins, then you need to add a new authorization page in the caching exceptions. Leaked password check. This feature enhances your website’s security by continuously monitoring users’ passwords for potential exposure in known data breaches and on the dark web. It works in the background and requires no action from users unless a leak is detected. SECURITY FIREWALL To enhance the security of your site, you can use the CleanTalk Security FireWall, which will allow you to block access by HTTP/HTTPS to your website for individual IP addresses, IP networks and block access to users from specific countries. Use personal BlackList to block IP addresses with a suspicious activity to enhance the WordPress security. Security FireWall may significantly reduce the risk of hacking and reduces the load on your web server. CleanTalk Security is fully compatible with the most popular VPN services. Also, CleanTalk security supports all search engines Google, Bing, Yahoo, Baidu, MSN, Yandex, and etc. LIST OF FIREWALL FUNCTIONS Blocks or bypass visitors by IP, IP Network. Country blocking. It also has option to avoid blocking hits from major search engines like Google, Bing, Yahoo, Baidu, Yandex, and etc. Traffic control. CleanTalk security Traffic Control will track every single visitor no matter if they are using JavaScript or not and provides many valuable traffic parameters. Another option in Security Traffic Control – “Block user after requests amounts more than” – blocks access to the site for any IP that has exceeded the number of HTTP requests per hour. If this number of requests will be exceeded, this IP will be added to the Security FireWall Black List for 24 hours. Security Firewall has a limit for requests to your website (by default 1000 requests per hour, so you can change it) and if any IP exceed this threshold it will be added to security firewall for next 24 hours. It allows you to break some of the DDoS attacks. Limit Login Attempts. Limit Login Attempts – is a part of brute-force protection and security firewall. Web Application FireWall (WAF) for WordPress Security Plugin. The main purpose of Web Application FireWall (WAF) is real-time protection from unauthorized access, even if there are critical known/unknown vulnerabilities. Security Web Application FireWall catches all requests to your website and checks HTTP parameters that include, SQL Injection, Cross Site Scripting (XSS), uploading files from non-authorised users, PHP constructions/code, the presence of malicious code in the downloaded files. In addition to effective information security and information security applications are required to know what is quality of protection and CleanTalk Security has logged all blocked requests that allow you to know and analyze accurate information. You can see your Cleantalk Security Logs in your Dashboard CleanTalk’s research team updates WAF database each time as we find a vulnerability, it means plugin’s users get protection even against unpublished vulnurebilites. Learn more how to set up and test About Security Web Application Firewall Email Notifications when administrators or users are logged in. We added this option to our security plugin. Now you can receive notifications if you want to know about an unauthorized entrance to your WP Dashboard. Notification will be sent only when a user was able to authorize entering login and password. If you are logged into the admin panel from the saved session, then the alert won’t be sent. MALWARE SCANNER WITH AUTO-CURE FUNCTION Scans WordPress files for hacker files or code for hacker code. Performs antivirus functions. Security Malware Scanner runs manually by users requests or automaticaly by WordPress cron. All of the results will send in your Security CleanTalk Dashboard with the details and you will be able to investigate them and see if that was a legitimate change or some bad code was injected. If you are unsure how to identify, remove, or clean malware using the plugin, you can book a malware removal service with our Security & Pentest team. As an alternative, you can use the Website Malware Scanner for frontend security and malware checks. It scans by URL and requires no plugins. LIST OF MALWARE SCANNER, ANTIVIRUS FUNCTIONS Malware autoscanning. Scans the website automatically at intervals ranging from once every 12 hours to once every 30 days. Cure malware. It cures infected files automatically if the scanner knows cure methods for these specific cases. If the option is disabled then when the scanning process ends you will be presented with several actions you can do to the found files, Cure. Malicious code will be removed from the file. Replace. The file will be replaced with the original file. Delete. The file will be put in quarantine. Do nothing. Before any action is chosen, backups of the files will be created and if the cure is unsuccessful it’s possible to restore each file. Security Malware Heuristic Check. This option allows you to check files of plugins and themes with heuristic analysis. Probably it will find more than you expect. Security Malware scanner to find SQL Injections. The CleanTalk Security Malware Scanner allows you to find code that allows performing SQL injection. It is this problem that the scanner solves. Operating system cron tasks analysis. This functional provides an overview of scheduled cron jobs on server that perform automated tasks. DB Trigger analysis. Will search for known malicious signatures in database triggers. List unknown files. Shows the list of found unknown files in the malware scanner report. Unknown files do not have known virus signatures and do not have suspicious code. Meanwhile, unknown files do not belong to the public plugins and themes at wordpress.org. File System Watcher. File system Watcher monitors changes in the file system. This allows to quickly respond to a site infection by tracking which files were affected. The Watcher makes file system snapshots as often as one hour and show difference up to seven days time frame. Feedback System. If you don’t have programming experience and don’t know, is there security issue or not, you send some files to CleanTalk Cloud and we check them for malware code. After checking we send you an email notification with results, is there viruses or not. Please, look at our guide How malware file analysis works About Scanner Feedback System LIST OF THE MOST ACTIVE MALWARES BY FILENAMES radio.php admin-ajax.php .1235512.css 8sjdakSJ3.php wso.php cmd.php shell.php reverse_shell.php admin.php The list is actual on July 15th, 2025. The latest data is the article Is my site infected? VULNERABILITIES SCANNER AMONG INSTALLED PLUGINS AND THEMES Plugin checks installed plugins and themes for known (published) vulnerabilities. If finds vulnerable plugin/theme, it sends an Email notification and shows data in the Critical updates tab. List of the most recent vulnerabilities found and published by CleanTalk Research team, CVE-2025-5921 – SureForms – Unauthenticated XSS – POC, 200k+ installs. CVE-2025-3582 – Newsletter – Stored XSS to JS Backdoor Creation – POC, 300k+ installs. CVE-2025-2560 – Ninja Forms – Stored XSS to JS Backdoor Creation – POC, 700k+ installs. The list is effective on July 18th, 2025. Updates are avaible on https://research.cleantalk.org/. MISCELLANEOUS SECURITY OPTIONS Send additional HTTP headers option. There are several additional http-headers which added to the every http-requests by the plugin if this option is enabled: “X-Content-Type-Options” improves the security of your site (and your users) against some types of drive-by-downloads. “X-XSS-Protection” header improves the security of your site against some types of XSS (cross-site scripting) attacks. “Strict-Transport-Security” response header (often abbreviated as HSTS) informs browsers that the site should only be accessed using HTTPS, and that any future attempts to access it using HTTP should automatically be converted to HTTPS. “Referrer-Policy” make the Referer http-header transferring more strictly. Collect and send PHP logs. Collect and send PHP error logs to your CleanTalk Dashboard where you can list them. Prevent collecting of authors logins. Prevent visitors from collecting logins of the content authors from the website links (like example.com/?author=1). Also this function known as Stop User Enumeration. Prevent collecting of user login on password reset. The password reset error will not contain the data about selected username does not exist. Disable REST API for non-authenticated users. Turn this on to deny access to WordPress REST API for non-authenticated users. Denied requests will get a 401 HTTP Code (Unauthorized). Disable the WordPress endpoint “users” REST API. Disables access to /wp-json/wp/v2/users and /wp-json/wp/v2/users/”id_user”. Disable File Editor. By prohibiting file editing, you protect the site from malicious attacks that may try to change the code and gain access to the site or steal confidential information. TRANSLATE INTO YOUR LANGUAGE Thank you for helping translate the plugin! 感谢您帮助翻译这个插件！ (Gǎnxiè nín bāngzhù fānyì zhège chājìan!) प्लगइन का अनुवाद करने में मदद के लिए धन्यवाद! (Plugin ka anuvaad karne mein madad ke liye dhanyavaad!) ¡Gracias por ayudar a traducir el complemento! Merci d’avoir aidé à traduire le plugin ! شكرًا لمساعدتك في ترجمة الإضافة! (Shukran limusaa’adatika fi tarjamat al-idafa!) প্লাগইন অনুবাদে সাহায্য করার জন্য ধন্যবাদ! (Plug-in onubade shahajjo korar jonno dhonnobad!) Спасибо за помощь в переводе плагина! (Spasibo za pomoshch v perevode plagina!) Obrigado por ajudar a traduzir o plugin! (Obrigada if female) پلگ ان کا ترجمہ کرنے میں مدد کرنے کا شکریہ! (Plug-in ka tarjuma karne mein madad karne ka shukriya!) Terima kasih telah membantu menerjemahkan plugin! Danke, dass du beim Übersetzen des Plugins geholfen hast! プラグインの翻訳を手伝ってくれてありがとうございます！ (Puraguin no hon’yaku o tetsudatte kurete arigatou gozaimasu!) https://translate.wordpress.org/projects/wp-plugins/security-malware-firewall/