Translation of "unauthorised" into Spanish

Failing this, and unless failure to send the certificate is due to reasons beyond his control, the official’s absence shall be considered as unauthorised.

En su defecto, y salvo que el certificado no se envíe por motivos ajenos a la voluntad del funcionario, la ausencia se considerará injustificada.

to prevent the unauthorised entry of data and any unauthorised consultation, modification, or deletion of data;

impedir la introducción no autorizada de datos y toda consulta, modificación o supresión de datos no autorizada;