His niece, Sarah, posted a tweet which included some details about the cause of death, on Monday.
Rest In Peace, Dan Kaminsky. Our world will never be the same. pic.twitter.com/DCxjwDoBie— sarah b (@sarahbrie) April 25, 2021
"Dan struggled for years with diabetes and was even recently hospitalised because of it," she wrote. "This tragedy has nothing to do with the COVID-19 vaccination and unfortunately everything to do with diabetic ketoacidosis."
She said her uncle would have laughed at the idea of conspiracy theorists promoting anti-vaccination propaganda through his death.
Kaminsky gained fame in 2008 when he discovered a flaw in the domain name system protocol that could be used to poison the cache on most implementations of the protocol, according to Wikipedia.
He was also known for his research into the Sony rootkit which was exposed by Mark Russinovich, at that time with Winternals and now a Microsoft employee.
We are saddened to hear the news of the passing of Dan Kaminsky. Rest in Peace. pic.twitter.com/zrud3ckXCk— Black Hat (@BlackHatEvents) April 24, 2021
No one that knew Dan Kaminsky well is talking about DNS today. They are talking about kindness, boundless energy and positivity, spontaneous adventures, and how hard he worked to lift others up. Want to emulate one of the greatest hackers of all time? Let that be your guide.— Matt Devost (@MattDevost) April 24, 2021
Aw Dan. The year we met, you showed me a camera that fit in an Altoid box the night HD told me he was building metasploit.— Katie Moussouris (she/her) is 1/2 vaccinated (@k8em0) April 24, 2021
Your DNS bug catalyzed the creation of Microsoft Vulnerability Research. But your kindness is what we’ll miss. Rest easy old friend?https://t.co/cbeta7uRGe