diff --git a/core/src/main/resources/org/springframework/security/messages_es_ES.properties b/core/src/main/resources/org/springframework/security/messages_es_ES.properties
index 1ac373403c..c46e12def4 100644
--- a/core/src/main/resources/org/springframework/security/messages_es_ES.properties
+++ b/core/src/main/resources/org/springframework/security/messages_es_ES.properties
@@ -28,6 +28,7 @@ DigestAuthenticationFilter.nonceExpired=Nonce ha expirado/fuera de tiempo
 DigestAuthenticationFilter.nonceNotNumeric=Nonce token deber\u00EDa tener primero un token num\u00E9rico, pero ten\u00EDa {0}
 DigestAuthenticationFilter.nonceNotTwoTokens=Nonce token deber\u00EDa tener dos fichas pero ten\u00EDa {0}
 DigestAuthenticationFilter.usernameNotFound=Usuario y nombre {0} no encontrado
+ExceptionTranslationFilter.insufficientAuthentication=Para acceder a este recurso se requiere autenticaci\u00f3n completa
 JdbcDaoImpl.noAuthority=Usuario {0} no tiene GrantedAuthority
 JdbcDaoImpl.notFound=Usuario {0} no encontrado
 LdapAuthenticationProvider.badCredentials=Credenciales err\u00F3neas
@@ -38,7 +39,7 @@ LdapAuthenticationProvider.locked=La cuenta del usuario est\u00E1 bloqueada
 LdapAuthenticationProvider.emptyUsername=Usuario y nombre no permitido
 LdapAuthenticationProvider.onlySupports=S\u00F3lo UsernamePasswordAuthenticationToken es soportada
 PasswordComparisonAuthenticator.badCredentials=Credenciales err\u00F3neas
-PersistentTokenBasedRememberMeServices.cookieStolen=Invalid remember-me token (Series/token) mismatch. Implies previous cookie theft attack.
+PersistentTokenBasedRememberMeServices.cookieStolen=Discrepancia inv\u00e1lida de token remember-me (Series/token). Implica un ataque de robo de cookie previo.
 ProviderManager.providerNotFound=AuthenticationProvider no encontrado para {0}
 RememberMeAuthenticationProvider.incorrectKey=El actual RememberMeAuthenticationToken no contiene la clave esperada
 RunAsImplAuthenticationProvider.incorrectKey=El actual RunAsUserToken no contiene la clave esperada
diff --git a/web/src/main/resources/org/springframework/security/web/messages_es.properties b/web/src/main/resources/org/springframework/security/web/messages_es.properties
new file mode 100644
index 0000000000..c6635d46b0
--- /dev/null
+++ b/web/src/main/resources/org/springframework/security/web/messages_es.properties
@@ -0,0 +1 @@
+ExceptionTranslationFilter.insufficientAuthentication=Para acceder a este recurso se requiere autenticaci\u00f3n completa