Decades of experience

TBT Polygraph was established by Hannalie Groenewald, with the aim to provide a professional and trusted polygraph service.

Hannalie spent most of her career in the vetting environment, focusing on upholding the highest level of integrity of the workforce. Having experience in practicing and managing the entire vetting value chain, that is, background screening, vetting investigations, and analysis, as well as polygraph, marking a wealth of knowledge to assist you.

Her career started in the South African National Defence Force, attached to Defence Intelligence, Directorate Counter Intelligence, as a Vetting Investigator. She was trained as a Polygraph Examiner in 2002 by the American International Institute of Polygraph, accredited by the American Polygraph Association. In 2004, She transferred to the National Intelligence Agency, as a Polygraph Examiner attached to the Directorate Counter Intelligence. She achieved success in her career, with a journey spanning over two decades, performing diverse roles within Counter Intelligence, including risk management, operational management, analysis, investigations and security screening to mention a few. Her career culminated in her appointment as the Head of Vetting for KwaZulu Natal within the State Security Agency. 

Hannalie has a strong academic background, obtaining the following educational qualifications:

Education:

B-MIL degree with majors in Political Science and Industrial Psychology, Military Academy, University of Stellenbosch (2001).

BA Community Safety & Socio-Legal Studies with a specialisation in offender profiling, University of South Africa (UNISA) (Cum laude, 2007).

BA Honours in Counselling Psychology, University of South Africa (UNISA) (Cum laude, 2022).

Why Choose Us

Hannalie’s dedication to her profession and commitment to excellence is exemplified through continuous learning and participation in advanced training seminars.  In addition to numerous Intelligence courses, she attended the following Advanced Polygraph Training:

01

40th American Polygraph Association Advanced Training Seminar in San Antonio, Texas, USA (2005)

02

49th American Polygraph Association Advanced Training Seminar in Seattle, Washington, USA (2014)

03

53rd American Polygraph Association, Advanced Training Seminar in Austin, Texas, USA (2018)

04

International Polygraph Studies Centre, Advanced Training in Durban, South Africa (2019)

05

Southern African Polygraph Federation, Advanced Training in Durban, South Africa (2024)

We Will guide You Every Step Of The Way

The polygraph can be an invaluable tool for your business or organization, whether to direct an investigation, or to verify or refute information already gathered during an investigation. The polygraph further has immense benefit as a risk mitigation tool, by protecting your organization, assets and intellectual property against harm caused by unscrupulous employees.

Ask Us Anything, Anytime.