On 16 April 2025, CSI Africa was contacted by a well-known kindergarten in Gauteng with a request for assistance. The institution required two polygraph examinations following a suspicious incident that had taken place just two days earlier, on 14 April. During the pre-test briefing, the owner and principal explained to our examiner, Johan Griesel, that […]
In June 2024, CSI AFRICA was contacted by a prominent aviation company that operates local and international aircraft charters. The CEO reported that a small safe, containing a significant amount of local and foreign currency, had been stolen from a cupboard in his office while he was on a business trip abroad. Upon his return, […]
As a follow-up to our previous post “Confession of an Addict,” we delve into the groundbreaking application of polygraph testing in the realm of drug rehabilitation. While polygraph tests are frequently used in various fields such as criminal justice, their implementation in substance abuse rehabilitation is a pioneering step that could revolutionize the industry. Context: […]
In today’s complex world, organisations face numerous challenges in protecting themselves from fraud and deception. To combat these threats effectively, professionals equipped with specialised skills and certifications are indispensable assets. Among such individuals, those individuals who possess the dual qualifications of being a Certified Fraud Examiner (CFE) and a Polygraph Examiner stand out as invaluable […]
Forensic psychophysiologist Johan Griesel recently joined the ranks of CSI Africa’s Certified Fraud Examiners (CFE). He joins CSI Africa CEO Amelia Griesel, who was the first polygraphist in South Africa to obtain CFE certification. The addition of the CFE certification to Johan Griesel’s already impressive portfolio of qualifications further strengthens our polygraph team’s capabilities. It […]
I’ve previously written about a polygraph examination where the examinee admitted to stealing construction equipment worth R60,000 and sold it for R3,000 to support a drug habit. It’s a clear-cut case legally and morally. But what if theft is act of desperation by a father trying to afford medical care for his 4-month old son? […]
Forensic psychologist Theresa Gannon studied the phenomenon of confessions during polygraph examinations on sex offenders in the UK in 2014. Gannon and her colleagues found that 75% of the offenders studied are more likely to disclose relevant information during a polygraph examination. Our figures show a similar benchmark, with roughly 80% of examinations resulting in […]
Polygraph testing might not be a glamorous job. It may not even be all that exciting. Every now and then, however, we come across a case worthy of a quizzical raised eyebrow. Such is the case of an employee who claimed he was robbed, and then got more than he bargained for from his employer.
A while back we got called in by a prominent gold mine in the Gauteng area. Their records indicated that some of their diesel stock went missing on a regular basis. But a loss of diesel wasn’t their only concern as it turned out – thanks to a careful ear.
“Down stairs toilets for non-whites or if you black wearing EPWP overall-by order councillor office” – thus read a notice pasted on the front door of Port Elizabeth’s Kuyga Community Hall. Furious residents were quick to demand answers from Ward 40 DA councillor, Jason Grobbelaar. This unfortunate turn of events came about after three Extended […]
