diff --git a/packages/shared/src/components/auth/LoginForm.tsx b/packages/shared/src/components/auth/LoginForm.tsx
index 2d3045933c..4a6d0e014e 100644
--- a/packages/shared/src/components/auth/LoginForm.tsx
+++ b/packages/shared/src/components/auth/LoginForm.tsx
@@ -1,7 +1,11 @@
 import classNames from 'classnames';
 import type { Dispatch, FormEvent, ReactElement, SetStateAction } from 'react';
-import React, { useState } from 'react';
+import React, { useEffect, useRef, useState } from 'react';
+import type { TurnstileInstance } from '@marsidev/react-turnstile';
+import { Turnstile } from '@marsidev/react-turnstile';
 import type { LoginPasswordParameters } from '../../lib/auth';
+import { AuthEventNames } from '../../lib/auth';
+import { Origin } from '../../lib/log';
 import { formToJson } from '../../lib/form';
 import { Button, ButtonVariant } from '../buttons/Button';
 import { ClickableText } from '../buttons/ClickableText';
@@ -12,6 +16,7 @@ import AuthForm from './AuthForm';
 import { IconSize } from '../Icon';
 import Alert, { AlertParagraph, AlertType } from '../widgets/Alert';
 import { labels } from '../../lib';
+import { useLogContext } from '../../contexts/LogContext';
 
 export interface LoginFormProps {
   onForgotPassword?: (email: string) => unknown;
@@ -34,7 +39,9 @@ export type LoginHintState = [
 export type LoginFormParams = Pick<
   LoginPasswordParameters,
   'identifier' | 'password'
->;
+> & {
+  turnstileToken?: string;
+};
 
 function LoginForm({
   onForgotPassword,
@@ -48,6 +55,18 @@ function LoginForm({
   autoFocus = true,
   onSignup,
 }: LoginFormProps): ReactElement {
+  const { logEvent } = useLogContext();
+  const turnstileRef = useRef<TurnstileInstance>(null);
+  const [turnstileLoaded, setTurnstileLoaded] = useState(false);
+  const [turnstileError, setTurnstileError] = useState(false);
+  const turnstileSiteKey = process.env.NEXT_PUBLIC_TURNSTILE_KEY ?? '';
+
+  useEffect(() => {
+    if (hint) {
+      turnstileRef.current?.reset();
+    }
+  }, [hint]);
+
   const onLogin = async (e: FormEvent<HTMLFormElement>) => {
     e.preventDefault();
 
@@ -55,7 +74,20 @@ function LoginForm({
       return;
     }
 
+    if (turnstileSiteKey && !turnstileRef.current?.getResponse()) {
+      logEvent({
+        event_name: AuthEventNames.LoginError,
+        extra: JSON.stringify({
+          error: 'Turnstile not valid',
+          origin: Origin.LoginTurnstile,
+        }),
+      });
+      setTurnstileError(true);
+      return;
+    }
+
     const form = formToJson<LoginFormParams>(e.currentTarget);
+    form.turnstileToken = turnstileRef.current?.getResponse() ?? undefined;
     onPasswordLogin(form);
   };
   const [shouldFocus, setShouldFocus] = useState(autoFocus);
@@ -109,6 +141,21 @@ function LoginForm({
         saveHintSpace
         onChange={() => hint && setHint(null)}
       />
+      {turnstileSiteKey && (
+        <Turnstile
+          ref={turnstileRef}
+          siteKey={turnstileSiteKey}
+          options={{ theme: 'dark' }}
+          className="mx-auto min-h-[4.5rem]"
+          onWidgetLoad={() => setTurnstileLoaded(true)}
+        />
+      )}
+      {turnstileError && (
+        <Alert
+          type={AlertType.Error}
+          title="Please complete the security check."
+        />
+      )}
       <span className="mt-4 flex w-full flex-row">
         {onForgotPassword && (
           <ClickableText
@@ -124,7 +171,7 @@ function LoginForm({
           variant={ButtonVariant.Primary}
           type="submit"
           loading={!isReady}
-          disabled={isLoading}
+          disabled={isLoading || (!!turnstileSiteKey && !turnstileLoaded)}
         >
           {loginButton}
         </Button>
diff --git a/packages/shared/src/hooks/useLogin.ts b/packages/shared/src/hooks/useLogin.ts
index f53a4f64ac..10d8ed2288 100644
--- a/packages/shared/src/hooks/useLogin.ts
+++ b/packages/shared/src/hooks/useLogin.ts
@@ -23,6 +23,7 @@ import type { SignBackProvider } from './auth/useSignBack';
 import { useSignBack } from './auth/useSignBack';
 import type { LoggedUser } from '../lib/user';
 import { labels } from '../lib';
+import { Origin } from '../lib/log';
 import { useEventListener } from './useEventListener';
 import { broadcastChannel, webappUrl } from '../lib/constants';
 import { isIOSNative } from '../lib/func';
@@ -69,6 +70,7 @@ const useLogin = ({
       return betterAuthSignIn({
         email: form.identifier,
         password: form.password,
+        turnstileToken: form.turnstileToken,
       });
     },
     onSuccess: async (res) => {
@@ -78,7 +80,8 @@ const useLogin = ({
           extra: JSON.stringify({
             error: res.error,
             displayedError: labels.auth.error.invalidEmailOrPassword,
-            origin: 'betterauth email login',
+            origin: Origin.BetterAuthEmailLogin,
+            userAgent: navigator.userAgent,
           }),
         });
         setHint(labels.auth.error.invalidEmailOrPassword);
@@ -93,7 +96,7 @@ const useLogin = ({
             event_name: AuthEventNames.LoginError,
             extra: JSON.stringify({
               error: 'Missing user after Better Auth email login',
-              origin: 'betterauth email login boot',
+              origin: Origin.BetterAuthEmailLoginBoot,
             }),
           });
           setHint(labels.auth.error.generic);
@@ -113,7 +116,7 @@ const useLogin = ({
               error,
               'Failed to refresh Better Auth login state',
             ),
-            origin: 'betterauth email login boot',
+            origin: Origin.BetterAuthEmailLoginBoot,
           }),
         });
         setHint(labels.auth.error.generic);
@@ -138,7 +141,7 @@ const useLogin = ({
             event_name: AuthEventNames.LoginError,
             extra: JSON.stringify({
               error: result.error,
-              origin: 'betterauth native id token',
+              origin: Origin.BetterAuthNativeIdToken,
             }),
           });
           return;
@@ -150,7 +153,7 @@ const useLogin = ({
               event_name: AuthEventNames.LoginError,
               extra: JSON.stringify({
                 error: 'Missing user after Better Auth social login',
-                origin: 'betterauth native id token boot',
+                origin: Origin.BetterAuthNativeIdTokenBoot,
               }),
             });
             displayToast(labels.auth.error.generic);
@@ -168,7 +171,7 @@ const useLogin = ({
                 error,
                 'Failed to refresh Better Auth social login state',
               ),
-              origin: 'betterauth native id token boot',
+              origin: Origin.BetterAuthNativeIdTokenBoot,
             }),
           });
           displayToast(labels.auth.error.generic);
@@ -187,7 +190,7 @@ const useLogin = ({
           event_name: AuthEventNames.LoginError,
           extra: JSON.stringify({
             error: error || 'Failed to get social login URL',
-            origin: 'betterauth social url',
+            origin: Origin.BetterAuthSocialUrl,
           }),
         });
         socialPopup?.close();
@@ -206,7 +209,7 @@ const useLogin = ({
         event_name: AuthEventNames.LoginError,
         extra: JSON.stringify({
           error: 'Failed to open social login window',
-          origin: 'betterauth social popup',
+          origin: Origin.BetterAuthSocialPopup,
         }),
       });
       displayToast(labels.auth.error.generic);
diff --git a/packages/shared/src/lib/betterAuth.ts b/packages/shared/src/lib/betterAuth.ts
index bee2eb80a0..f124a39d00 100644
--- a/packages/shared/src/lib/betterAuth.ts
+++ b/packages/shared/src/lib/betterAuth.ts
@@ -90,11 +90,22 @@ const betterAuthPost = async <T = Record<string, unknown>>(
 export const betterAuthSignIn = async ({
   email,
   password,
+  turnstileToken,
 }: {
   email: string;
   password: string;
+  turnstileToken?: string;
 }): Promise<BetterAuthResponse> => {
-  return betterAuthPost('sign-in/email', { email, password }, 'Sign in failed');
+  const headers: Record<string, string> = {};
+  if (turnstileToken) {
+    headers['x-captcha-response'] = turnstileToken;
+  }
+  return betterAuthPost(
+    'sign-in/email',
+    { email, password },
+    'Sign in failed',
+    Object.keys(headers).length > 0 ? headers : undefined,
+  );
 };
 
 export const betterAuthSignUp = async ({
diff --git a/packages/shared/src/lib/log.ts b/packages/shared/src/lib/log.ts
index 40e2609ffd..76927efc85 100644
--- a/packages/shared/src/lib/log.ts
+++ b/packages/shared/src/lib/log.ts
@@ -85,6 +85,14 @@ export enum Origin {
   // Onboarding v2
   OnboardingModal = 'onboarding modal',
   OnboardingFeedEnd = 'onboarding feed end',
+  // Auth
+  BetterAuthEmailLogin = 'betterauth email login',
+  BetterAuthEmailLoginBoot = 'betterauth email login boot',
+  BetterAuthNativeIdToken = 'betterauth native id token',
+  BetterAuthNativeIdTokenBoot = 'betterauth native id token boot',
+  BetterAuthSocialUrl = 'betterauth social url',
+  BetterAuthSocialPopup = 'betterauth social popup',
+  LoginTurnstile = 'login turnstile',
 }
 
 export enum LogEvent {