Hacker News — Week of 2026-04-11 to 2026-04-17#
Story of the Week#
The community was deeply divided over Cal.com’s decision to abandon open-source for its core codebase, citing the reality that AI vulnerability scanners have given attackers the blueprints to generate working exploits in hours. This sparked a fierce defense of the GPL from Discourse, arguing that hiding code is a business decision and true defense requires an open ecosystem where defenders can run the exact same LLM scanners. The underlying fear across these threads is that cybersecurity is transitioning into a “proof of work” token lottery, where defenders and open-source maintainers must simply outspend attackers using highly capable models like Anthropic’s “Mythos”.