I. A. Inyang and M. S. U. Osagie, “A Review of Performance of Machine Learning and Deep Learning Models in Multiscale Spam Detection:An Analysis of Feature Engineering Impact Across Email, SMS, and Social Media”, FJS, vol. 10, no. 19, pp. 40–46, Oct. 2026, doi: 10.33003/fjs-2026-1019-6058.