Over the past three years, we’ve interviewed more than 1,200 venture-backed tech founders on our show BUILDERS (Formerly known as Category Visionaries). Among them, a standout group has come from one of the hardest markets to sell into: cybersecurity. These founders aren’t theorizing about go-to-market—they’ve earned their lessons the hard way, selling deep tech to skeptical buyers, navigating complex sales cycles, and carving out space in crowded, fear-driven categories. We’ve pulled together the single best GTM lesson from each. No fluff. No backstory. Just the real tactics that actually worked.