Mohd Puad, Norsyazwani, et al. “Security Challenges in Serverless Architectures: Vulnerabilities and Penetration Testing Approaches for AWS Lambda and Google Cloud Functions”. Journal of Applied Computer and Information Technology, vol. 1, no. 2, Aug. 2026, pp. 155-72, https://doi.org/10.67131/jacoit.v1i2.27.