18 years ago today, Dan Kaminsky @dakami disclosed the DNS cache poisoning vulnerability at Black Hat USA 2008, triggering one of the largest coordinated patch efforts in internet history. Before public disclosure, Dan organized multiple vendors to fix the flaw in secret. Many more legendary stories than could fit here, like how he exposed Sony’s rootkit across more than 568,000 networks and identified critical certificate vulnerabilities. Dan followed what he cared about and his curiosity. As Michael Tiffany @kubla put it, “Only Dan thought, ‘I could fix the human eye in software.’” He built DanKam, an augmented-reality app that helped colorblind people see color. Michael hosted Dan while he built the first version and described watching a colorblind houseguest sit at the kitchen table, “crying tears of joy seeing red for the first time.” His mother, Trudy Maurer, may have said it best when she accepted his Lifetime Achievement Award at the 2025 Difference Makers. “Daniel was the catalyst for many achievements across the vast internet spectrum, and I believe Dan truly represented the intersection of technology and humanity.” @dotMudge, who presented the award, said: “The Lifetime Achievement Award isn’t about what you achieve in your lifetime. That’s part of it. It’s about how many people you influence and bring in and then take it further.” We lost Dan too early from diabetic ketoacidosis in April 2021 at age 42. Some of you are hearing the name Dan Kaminsky for the first time.  The coordinated, community-first spirit Dan modeled is the bar. If you're in Vegas this week, you're walking the streets that the legends of security who came before you walked, when they also had no idea what they were doing, facing problems nobody had solved before. They had to figure it out as they went. Just like you're going to do. Thanks to those who contributed to this tribute video: Jeff Moss @thedarktangent, @paulvixie, @gadievron, Lena Smart, Derek Hinch and the many others who shared here.