Advancements in web services have increased the need for enhanced security in user authentication systems. Insider attacks, where privileged insiders compromise sensitive information, pose a significant threat. Rajamanickam et al. proposed a lightweight password-based authentication using Elliptic Curve Cryptography (ECC) to prevent such attacks. However, vulnerabilities in this method were identified by Salman Shamshad et al., highlighting the need for stronger solutions. This paper advocates for Identity and Access Management (IAM) systems, which employ multi-factor authentication (MFA) and single sign-on (SSO), offering enhanced security, access control, and regulatory compliance for organizations, effectively mitigating insider threats and other cyber risks.