Hatfield, Joseph M (June 2019). "Virtuous human hacking: The ethics of social engineering in penetration-testing". Computers & Security. 83: 354–366. doi:10.1016/j.cose.2019.02.012. S2CID86565713.
Salahdine, Fatima (2019). "Social Engineering Attacks: A Survey". School of Electrical Engineering and Computer Science, University of North Dakota. 11 (4): 89.
The story of HP pretexting scandal with discussion is available at Davani, Faraz (14 August 2011). "HP Pretexting Scandal by Faraz Davani". Retrieved 15 August 2011 – via Scribd.
Hatfield, Joseph M (June 2019). "Virtuous human hacking: The ethics of social engineering in penetration-testing". Computers & Security. 83: 354–366. doi:10.1016/j.cose.2019.02.012. S2CID86565713.