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Wednesday, 13 January 2021 10:34

Cancer claims talented RiskIQ researcher Yonathan Klijnsma

Cancer claims talented RiskIQ researcher Yonathan Klijnsma Image by Gerd Altmann from Pixabay

Senior threat researcher Yonathan Klijnsma of the firm RiskIQ has died a few days short of his 30th birthday, with the talented hacker meeting his end at the hands of cancer.

Klijnsma passed away on 6 January, according to a post by his wife, Nady, on his Twitter feed on 10 January.

Former Virus Bulletin editor Martijn Grooten said he had first encountered Yonathan seven years ago, "when I was doing some research on a subject he had also worked on. When I later gave a presentation on the same subject, he messaged me to say he had really enjoyed my talk. It meant a lot to receive this compliment from him".

iTWire has reported on a number of Yonathan's research efforts; he covered the compromise of e-commerce sites, with his focus being on credit card skimmers that are together known as Magecart.

Grooten said Yonathan had discovered he had a tumour in his tongue in October 2019.

"As he was due to receive chemotherapy and radiation treatment, we had a few honest conversations in which he told me about the physical and mental challenges he was facing," he wrote.


The statement issued by Yonathan's widow, Nady.

"The treatment seemed to have its desired effect and as he was recovering Yonathan was already talking about submitting to BlackHat. But then there was 'bad bad news', as he told me in April: the cancer had returned, was now in his lungs and was deemed incurable.

"After he explained a new experimental treatment he was going to receive, we had a beautiful conversation about life and death – a conversation that will stay with me forever."

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Sam Varghese

Sam Varghese has been writing for iTWire since 2006, a year after the site came into existence. For nearly a decade thereafter, he wrote mostly about free and open source software, based on his own use of this genre of software. Since May 2016, he has been writing across many areas of technology. He has been a journalist for nearly 40 years in India (Indian Express and Deccan Herald), the UAE (Khaleej Times) and Australia (Daily Commercial News (now defunct) and The Age). His personal blog is titled Irregular Expression.

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