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UFS student’s research project aims to protect the country’s whistleblowers

24 November 2023 | Story André Damons | Photo SUPPLIED

Ricus Krause, an honours student in the Department of Computer Science and Informatics at the University of the Free State (UFS), receives his awards during the Suid-Afrikaanse Akademie vir Wetenskap en Kuns (The South African Academy for Science and Arts) Student Symposium in Natural Sciences.

An honours student in the Department of Computer Science and Informatics at the University of the Free State (UFS) project on using blockchain technology to protect whistleblowers secured him first place for the best project and presentation in his session at the annual Suid-Afrikaanse Akademie vir Wetenskap en Kuns (The South African Academy for Science and Arts) Student Symposium in Natural Sciences.

Ricus Krause, who presented his project, titled “Blokskakel Fluitjieblaser-Stelsel” (Blockchain Whistleblower System), at the symposium, also received the Eureka DIY Solutions Prize for an Outstanding Contribution to Computer Sciences and Mathematical Sciences. The symposium was hosted by the University of Pretoria in October.

His research aimed to address the shortcomings of current systems for protecting whistleblowers and to design a robust computer system that ensures the confidentiality and integrity of information by using blockchain technology. This system had to protect whistleblowers’ identities and securely preserve evidence of corruption.

Interested in Cybersecurity

“I have been interested in Cybersecurity ever since I started studying. I approached Dr Wynand Nel (supervisor) at the start of my honours year to ask if he had any ideas for a security-focused project, and he introduced me to blockchain technology and the blockchain research group. Blockchain piqued my security interest and allowed me to explore the field further.”

“After meeting with the group, the idea of a blockchain-based system for whistleblowers was born, and I started researching South Africa’s biggest problems, where corruption is at the top. During my initial research, I also discovered that whistleblowers face extreme consequences much more frequently than we think,” says Krause.

He identified the main problem with whistleblowing as the revelation of a whistleblower’s identity before it is safe. Thus, a system was needed to protect a whistleblower’s anonymity and facilitate safe communication to contact investigators.

On winning the awards, Krause said he knew he was competing against master’s and PhD students and did not expect to win. “This was the first time I’d presented my project at an event, so I was surprised when my name was called for the first prize in my session. I wanted to pinch myself to make sure I wasn’t dreaming.”

“I am genuinely grateful to have had the opportunity to present months of research to my peers and experts in their fields. I will always look back at the event with fond memories. I am proud of myself and my fellow students for presenting their research at the symposium when others did not dare to,” he says.

Address shortcomings of current systems

Krause is supervised by Dr Nel and Dr Rouxan Fouché, lecturers in the Department of Computer Science and Informatics and this research project falls within the department’s research focus area of Blockchain Technologies, headed by Dr Nel. The digital transformation of industries, known as Industry 4.0 has already started, and blockchain forms part of the digital revolution. The research areas include blockchain algorithms and data structures, blockchain security, blockchain applications and crypto assets.

With the recent high-profile killings of two whistleblowers in South Africa and with many other whistleblowers becoming victims of intimidation and violence to silence them after their identities were exposed, the researchers believe it is necessary to conduct research and develop a computer system to address the glaring shortcomings of current systems.

“Our research identified blockchain technology as a potential solution that meets these needs. Blockchain provides an immutable structure, supports non-repudiation, and grants accessibility to all stakeholders. It has the potential to provide a security-focused system that preserves the confidentiality and integrity of evidence. The system involves the anonymous registration of whistleblowers, the processing and storage of evidence, and the use of cryptography to ensure the privacy of messages,” says Krause.

According to him, implementing this system in the real world, including the composition of the blockchain structure, seems daunting, especially regarding scalability and legal issues. With this project, he explains, they built a working blockchain system on a single computer. The project can be improved by expanding the blockchain system to multiple nodes communicating over a network. This improvement will take the Blockchain Whistleblower project from a concept to a valuable contribution to society.

How it works

“In a nutshell, this research has highlighted the potential of a blockchain-based whistleblower system to overcome the challenges surrounding corruption. It is a step forward in the fight against crime and the protection of those with the courage to expose misconduct. However, it is essential to continue with research and implementation to make this system a reality and fulfil its promise,” Dr Nel says.

Traditionally, Krause explains, a central system is used where a single organisation controls the system. The potential danger is that the system provider becomes a single point of failure for the system and, thus, a target for cyberattacks. Another concern of a centralised system is the organisation’s ability to manipulate data and uncover the identities of whistleblowers. The integrity of the evidence can also be questioned when it is stored in a centralised database where modifications from a single point of access can affect all data.

A centralised system, therefore, would not be reliable enough for the high-risk circumstances of whistleblowers. They have concluded that a distributed or decentralised system would be an appropriate solution to the problem. A distributed system will continue to function as a whole even if a part is compromised.

The Blockchain Whistleblower System aims to make a proof-of-concept contribution to the field of blockchain technology. The system is installed locally on the user’s computer, where whistleblowers and investigators use an anonymous profile to interact with the system, which interacts with the blockchain. After signing in, users can choose to report a new incident or view messages on the blockchain.

Reporting a crime

If the user wants to blow the whistle on a crime, the process starts with a report to gather more information about the incident. The whistleblower then selects the evidence of the crime on their computer. A hash function algorithm processes the evidence to create a fixed-length evidence hash. Hashing is a one-way cryptographic process that uniquely represents the input data. It is important to note that only the evidence hash is stored on the blockchain, not the evidence itself. The selected evidence is stored in a password-protected encrypted folder on the whistleblower’s computer. Investigators can later use this evidence hash to verify the integrity of the evidence when they eventually receive it.

What is next for this project?

Krause says he would like to implement his project with nodes communicating via a network in the future. A network opens a new box of security considerations to explore and discover and would also enable the programme to be used at any location, making it accessible to whistleblowers everywhere.

“This project started with the idea to protect whistleblowers’ identities and provide a platform for them to contact investigators safely. The end goal is for the project to provide a platform where whistleblowers can anonymously report misconduct, safely communicate with investigators, and verify the integrity of their evidence.

“My hope for the project is to build a better South Africa by fighting corruption, one of the biggest obstacles to our country’s growth. By solving the many challenges whistleblowers encounter, I hope to foster a culture where whistleblowers are not afraid to speak out against crime.”

News Archive

UFS Winter Graduation Ceremony

2012-06-18

UFS awards record number of master’s degrees and doctorates

The University of the Free State (UFS) celebrated an increase in postgraduate successes with a record number of master’s degrees and doctorates that were awarded during the winter graduation ceremony at the Bloemfontein campus on Thursday 14 June 2012.

A total of 481 master’s degrees and 82 doctorates were awarded in two ceremonies in the Callie Human Centre on the Bloemfontein Campus. This is the most postgraduate qualifications to be awarded at a single graduation ceremony.

DiMTEC has reason to celebrate

Dr Andries Jordaan (second from right) with some of the people who received their master's degrees. From the left are Kehinde Balogun, the couple Olive Chisola-Darris en Clement West Darris, and the couple Everson Ndlovu en Patience Sibongile Ndlovu.
Photo: Leatitia Pienaar
18 June 2012

DiMTEC had reason to celebrate at the winter graduation ceremony. The Disaster Management Training and Education Centre for Africa delivered a healthy crop of 32 master’s degrees and one doctorate.

This was the most master’s degrees that the centre has been awarded at one opportunity. The doctorate, however, was not at DiMTEC – Andries Jordaan, the director of the centre, obtained his Ph.D. in Agricultural Economy.

It was also the first time that two couples received their master’s degrees at the centre at the same time.

Speaking at the event, Dr Jordaan said former students of the centre were using their expertise worldwide. Some of them are in senior positions at the United Nations, in African countries, Afghanistan, and elsewhere. DiMTEC’s students hail from 17 African countries, including French-speaking countries.

“I am proud that we have a footprint right across Africa,” he said.

Three travel all the way from Europe for their MBAs

Smiles on an important day. From the left are: Kasina Baker, Friederike Hackelberg, and Johanna Kössler and her parents and sister.
Photo: Stephen Collett
18 June 2012

No distance, time or money could prevent three MBA graduates from Europe from attending the winter graduation ceremony in Bloemfontein. Two of them were exchange students who were so captivated by the university and the country that they undertook their MBA studies at the Business School.

Friederike Hackelberg of Bremen, Germany, was an exchange student in 2008 and extended her stay to do an MBA. Johanna Kössler of Bolzano, Italy, was also an exchange student who succumbed to the charms of the UFS and South Africa. She brought her parents, George and Nannie, and her sister, Magdalena, with her to attend the graduation ceremony.

Kasina Baker of Warsaw, Poland, began her studies while her husband was working in Kenya. She wanted to study at a quality institution and thus chose the UFS's Business School.

Jessica gets three prestigious medals

Jessica Potgieter (right) was the first student in almost three decades to receive three prestigious medals at the Winter Graduation Ceremony. She received the Dean's medal as best Master's student in the Faculty of Natural and Agricultural Sciences, the Senate Medal as best Master's student at the university and the Award for Scientific Achievement by the South African Association for the Advancement of Science. She is seen here with her mother, Mrs Ilse van Rhyn, and Dr Khotso Mokhele, Chancellor.
Photo: Johan Roux
18 June 2012

Three daughters, three degrees for proud Kovsie mom

Liezel Alsemgeest and Adri Kotzé.
Photo: Leonie Bolleurs
18 June 2012

Adri Kotzé, Faculty Manager in the Faculty of Law, is a very proud parent. In the course of one year, all three her daughters will receive degrees from the University of the Free State (UFS). First in line is the eldest, who received her Ph.D. in Business Management at the Winter Graduation Ceremony.

Liezel is a lecturer in the Department of Business Management at the UFS, where she lectures, publishes and hopes to further her research in finance. “I enjoy working at the university because you have the freedom to do your own thing and focus on whatever you like,” she says.

The title of Liezel’s thesis is Customers’ perception of business units within an agricultural business in South Africa. Her focus is on the subjects of customer satisfaction and financial management, with a specific focus on the management of agricultural businesses.

Middle sister Corné will be graduating with a master’s degree in Occupational Therapy in December, while the youngest, Adéle, will receive her B.A. in Media Studies and Journalism at the Autumn Graduation Ceremony in 2013.

“I am very proud of all three my daughters,” says Adri.

Sasolburg minister receives Dean's Medal for best master's degree in Theology

Rev. Frans Redelinghuys.
18 June 2012

Rev. Frans Redelinghuys of the Reformed Church in Sasolburg received his master’s degree in Theology at the University of the Free State’s Winter Graduation Ceremony. Rev. Redelinghuys was also awarded the Dean’s Medal as the best master’s degree student in the Faculty of Theology.

The focus of his dissertation is Spirituality. “My lecturers are all people who practice what they preach and they have shared their knowledge with me.,” he says.

“My studies also contributed to my personal development,” says Rev. Redelinghuys.

Student from the Netherlands receives degree at UFS Winter Graduation Ceremony

Deborah Van den Bosch-Heij.
Photo: Leonie Bolleurs
18 June 2012

Deborah Van den Bosch-Heij from the Netherlands was awarded a Ph.D. at the Winter Graduation Ceremony by the Faculty of Theology of the University of the Free State (UFS). Her thesis, Spirit and healing in Africa: A reformed pneumatological perspective, is an interdisciplinary investigation of the relationship between the Holy Spirit and healing in Southern Africa. The research addresses the need for a reviewed and contextually reformed approached to healing.

Deborah started her career as a minister at the Valkenburg Congregation of the Protestant Church in the Netherlands in 2001. She was appointed by the missionary department of her church to lecture at the Justo Mwale Theological University College in Lusaka, Zambia in 2005. It was here that she decided on the topic of her thesis. Prof. Rian Venter from the Department of Systematic Theology at the UFS, who is also involved at the Justo Mwale College, is Deborah’s promoter and assisted her in her studies whilst she was in the Netherlands. It was also Prof. Venter who made Deborah aware of the importance of interdisciplinary research.

Well-known judge's granddaughter receives degree

Judge Joos Hefer and Annelie de Man.
Photo: Leonie Bolleurs

Annelie de Man, a law researcher at the Supreme Court of Appeal in Bloemfontein received her master’s degree at the Winter Graduation Ceremony of the University of the Free State (UFS). She is Judge Joos Hefer’s granddaughter. Annelie was also awarded the Dean’s Medal as the best master’s degree student in the Faculty of Law.

“Today is one of the biggest highlights in my career,” says Annelie, who received exposure to the field of law from a young age.

In September, she will be leaving for Italy to study for a master’s degree in European Human Rights at the European Inter University.

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