BaseCloud

BaseCloud Shield is a lightweight yet powerful security plugin that enforces Two-Factor Authentication (2FA) on your WordPress login page. Unlike other bloat-heavy plugins, BaseCloud Shield focuses on reliability and flexibility in OTP delivery.
Key Features:
<ul>
<li>Plug & Play: Works immediately using standard WordPress email delivery.</li>
<li>Multi-Recipient System: Send OTPs to the logging-in user, a manager email, or selected users.</li>
<li>Multi-Channel Delivery: Choose multiple delivery methods simultaneously (Email, SendGrid, WhatsApp, SMS, Webhook).</li>
<li>WhatsApp Integration: Send OTPs directly via WhatsApp using Twilio API.</li>
<li>SMS Integration: Deliver OTPs via SMS using Twilio API.</li>
<li>SendGrid API V3: Native integration for high-deliverability emails.</li>
<li>Webhook Support: Connect to custom webhooks for advanced automation flows.</li>
<li>Secure OTPs: 6-digit one-time passwords that expire automatically.</li>
<li>Browser Trust: “Remember this device” functionality to reduce friction for authorized users.</li>
<li>Advanced Attack Protection (v1.4.2): Credential stuffing detection, progressive delays, username enumeration protection.</li>
</ul>
<h3>External Services</h3>
This plugin may connect to external third-party services depending on your configuration. Below is a detailed explanation of what services are used, what data is sent, and when:
SendGrid Email API (Optional)
If you select “SendGrid API” as your delivery method in the plugin settings, this plugin will send data to SendGrid’s email service to deliver one-time password (OTP) codes.
<ul>
<li>Service: SendGrid by Twilio</li>
<li>What it’s used for: Sending two-factor authentication codes via email with improved deliverability</li>
<li>When data is sent: Every time a user attempts to log in and 2FA is enabled</li>
<li>Data sent:
<ul>
<li>Recipient email address (user’s email or manager email if configured)</li>
<li>Sender email address (configured in plugin settings)</li>
<li>Site name</li>
<li>Username attempting to log in</li>
<li>6-digit one-time password code</li>
<li>Email subject and HTML body</li>
</ul>
</li>
<li>API Endpoint: https://api.sendgrid.com/v3/mail/send</li>
<li>Terms of Service: https://www.twilio.com/legal/tos</li>
<li>Privacy Policy: https://www.twilio.com/legal/privacy</li>
</ul>
Important: You must have a SendGrid account and API key to use this feature. You are responsible for complying with SendGrid’s terms of service and ensuring proper data handling practices.
Twilio API for WhatsApp & SMS (Optional)
If you select “WhatsApp” or “SMS” as delivery methods, the plugin will send data to Twilio’s API to deliver one-time password codes.
<ul>
<li>Service: Twilio</li>
<li>What it’s used for: Sending two-factor authentication codes via WhatsApp and/or SMS</li>
<li>When data is sent: Every time a user attempts to log in and 2FA is enabled with WhatsApp/SMS selected</li>
<li>Data sent:
<ul>
<li>Recipient phone number (from user meta field ‘billing_phone’)</li>
<li>Sender phone number (WhatsApp number or SMS number configured in settings)</li>
<li>Site name</li>
<li>Username attempting to log in</li>
<li>6-digit one-time password code</li>
<li>Message body</li>
</ul>
</li>
<li>API Endpoint: https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Messages.json</li>
<li>Terms of Service: https://www.twilio.com/legal/tos</li>
<li>Privacy Policy: https://www.twilio.com/legal/privacy</li>
</ul>
Important: You must have a Twilio account with WhatsApp and/or SMS capabilities enabled. Phone numbers must be stored in user meta (field: ‘billing_phone’). You are responsible for complying with Twilio’s terms of service.
Custom Webhook (Optional)
If you select “Webhook” as a delivery method, the plugin will send login notification data to a webhook URL you configure.
<ul>
<li>Service: Custom webhook endpoint (configured by you)</li>
<li>What it’s used for: Sending login notifications to external systems for custom processing</li>
<li>When data is sent: Every time a user attempts to log in and 2FA is enabled</li>
<li>Data sent:
<ul>
<li>Site name</li>
<li>Username attempting to log in</li>
<li>User email address</li>
<li>6-digit one-time password code</li>
<li>Recipient information array</li>
<li>Timestamp of login attempt</li>
</ul>
</li>
<li>Endpoint: User-configured webhook URL</li>
</ul>
Important: When using the webhook option, you are responsible for the security and privacy compliance of the endpoint you configure. Ensure your webhook endpoint uses HTTPS and follows proper data protection practices.
Standard WordPress Email (Default)
By default, this plugin uses WordPress’s built-in <code>wp_mail()</code> function, which does not involve any external services unless your WordPress installation is configured to use a third-party SMTP service.

BaseCloud Shield

Enterprise-grade Two-Factor Authentication (2FA) with support for Email, SendGrid API, Webhooks, WhatsApp, and SMS delivery.

noplanman

With WP-OTP you can easily set up 2 Factor Authentication with One Time Passwords for your WordPress login. 
This extra layer makes your WordPress site a lot more secure.
The new stealth mode allows for invisible OTP code entry, making your login screen look like any other, no extra OTP code input field.
<h4>Getting started</h4>
After installing and activating the plugin, every user can enable WP-OTP on their profile page.
It’s as easy as scanning the provided QR Code or entering the OTP secret to any OTP generator app. 
Then just activate it by entering the generated OTP and voilà, all set up. 
Now, the login requires an OTP code to succeed.
Each user gets their own secret key to authenticate with, giving them control over their login security.
<h4>Development</h4>
This plugin is completely open source and a work of passion. 
If you would like to be part of it and join in, make your way over to the <a href="https://git.feneas.org/noplanman/wp-otp" rel="nofollow ugc">project page</a> now. 
Also, if you have an idea you would like to see in this plugin or if you’ve found a bug, please <a href="https://git.feneas.org/noplanman/wp-otp/issues/new" rel="nofollow ugc">let me know</a>.
<h4>Configuration</h4>
<ul>
<li><code>WP_OTP_STEALTH</code>: Set this to <code>true</code> to enable stealth OTP mode.</li>
</ul>
<h4>Filters</h4>
There are a multitude of filters to be adjusted.
<ul>
<li><code>wp_otp_qr_code_provisioning_uri</code>: URI for online QR Code rendering (must contain <code>{PROVISIONING_URI}</code> placeholder for QR Code data).</li>
<li><code>wp_otp_login_form_text</code>: Text for input field on the login screen.</li>
<li><code>wp_otp_login_form_text_sub</code>: Subtext for the input field on the login screen.</li>
<li><code>wp_otp_login_form_invalid_code_text</code>: Error text for an invalid code input on the login screen.</li>
<li><code>wp_otp_code_expiration_window</code>: Set the window of code verification expiration.</li>
<li><code>wp_otp_recovery_codes_count</code>: Number of recovery codes to generate.</li>
<li><code>wp_otp_recovery_codes_length</code>: Length of the recovery codes.</li>
<li><code>wp_otp_secret_length</code>: Length of the secret key.</li>
</ul>
<h4>Minimum requirements</h4>
WordPress 4.6, PHP 7.4.
<h4>Donate / Support</h4>
All <a href="https://noplanman.ch/donate" rel="nofollow ugc">donations</a> are much appreciated, thank you 🙏
<a href="https://tidelift.com/subscription/pkg/wordpress-wp-otp?utm_source=wordpress-wp-otp&utm_medium=referral&utm_campaign=readme" rel="nofollow ugc">Get professional support for this plugin with a Tidelift subscription</a> 
Tidelift helps make open source sustainable for maintainers while giving companies assurances about security, maintenance, and licensing for their dependencies.
<h4>Security</h4>
To report a security vulnerability, please use the <a href="https://tidelift.com/security" rel="nofollow ugc">Tidelift security contact</a>. Tidelift will coordinate the fix and disclosure.

WP-OTP

Make your WordPress login extra secure with One Time Passwords.

BaseCloud Shield vs WP-OTP