The Early Spark: A 10-Year-Old’s Curiosity with an Apple IIc
Rob Juncker’s journey into technology began at age 10 when his parents brought home an Apple IIc for word processing. Within two days, he had the lid off, driven by a thirst to understand how it worked. With no books or formal training available, he taught himself BASIC programming by observing code on the screen and deducing which words triggered specific actions. He describes this moment as his first experience of the beauty of computers — likening it to an artist receiving a paintbrush and realizing they could create their own canvas rather than stay confined to the page.
Modems, Wardialers, and the First Social Engineering Hack
His fascination deepened with modems — then just 300 baud but still magical. When his parents refused to give him a dedicated phone line for his modem, Juncker took matters into his own hands. He called the phone company to order a line installation, then ran laps in the basement to raise his body temperature and feign illness to avoid school. When the engineer arrived, he was home alone with a forged letter from his father, requesting a low-noise line for the modem. The forgery succeeded because the family already used a computer as a word processor, giving the engineer nothing to verify the signature against. This act marked his first successful social engineering effort — a ‘deepfake’ of sorts, as he puts it — done out of necessity to access games he couldn’t afford.
Escalation and the Knock on the Door
With the modem, Juncker began downloading pirated software, which eventually got him into trouble — though he notes he is now completely free of any legal repercussions. In his early teens, he joined forces with another hacker to bypass copy protection in SimCity, which required users to enter a population number from a red, non-photocopyable sheet. While he credits his peer with solving the technical challenge, he acknowledges working in assembly language to crack such controls was typical of his activities at the time. The turning point came when a U.S. legal organization knocked on his door. His mother answered, and he overheard agents stating they understood there had been attempts to tap phone lines or access restricted services. When his mother denied it, Juncker heard her say his name — a moment that made her realize the truth. They had a conversation, resulting in him losing the second phone line and receiving a warning. He reflects that this intervention likely prevented far more serious consequences.
College, Economics, and the Shift Toward Defense
In college, Juncker pursued both computer science and economics — a combination he jokingly called ‘the most boring geek on the face of the earth.’ But it proved pivotal. While he had been warned against misusing computer skills, economics revealed how those same skills could lead to a legitimate, well-paid career in protecting systems rather than attacking them. He realized he could make good money in software while doing good with computing. Returning to his artist analogy, he said hackers and artists share the same curiosity — but the hacker doesn’t just want to paint a new picture; they want to create a new canvas on which to paint.
The Moral Compass: Health, Legacy, and Purpose
In his early twenties, health issues prompted Juncker to ask: ‘What defines me; what is the legacy I want to leave in this world?’ The answer was simple in theory but hard in practice: he wanted to leave the world a better place. This introspection awakened a moral compass he believes had always been subtly present — what kept him from crossing into criminal territory despite his early hacking. He describes morality as his true North Star, guiding him to use his offensive security knowledge to defend organizations and make the world safer. His understanding of how systems are attacked became the foundation for how he defends them.
Professional Path: From VMware to Mimecast CTO
Juncker channeled this mindset into senior R&D and engineering roles at VMware, LANDesk, and Ivanti. In 2017, he joined Code42, becoming its CTO in 2020. When Mimecast acquired Code42 in July 2024, he transitioned to his current role as chief product and technology officer. In this position, he combines everything he learned starting at age 10 — software, technology, and security — to help organizations defend against threats. He often reflects on Grace Hopper’s warning: ‘The most dangerous phrase in the language is, ‘We’ve always done it this way.” For Juncker, the path from teenage hacker to security leader wasn’t about abandoning curiosity, but redirecting it toward protection, innovation, and ethical responsibility.
Source: SecurityWeek