The antonym for "more secured" is "less secured." When something is less secure, it means that it is vulnerable and easy to be threatened or attacked. For instance, a house with a weak lock is less secured than a house with a strong lock. Similarly, a computer system with weak passwords and no proper firewall is less secured than a system with strong passwords and a reliable firewall. In the current digital age where cybercrime is on the rise, it is crucial to have strong security measures in place to avoid any kind of security breaches. Thus, being less secured should be avoided at all costs to protect sensitive information and data.