But things like insecure argument handling are low-hanging fruit for security auditors.
Insecure argument handling is not like the more advanced subtle vulnerabilities that we are seeing in some LLM-assisted reports these days. Insecure argument handling is 1990's security.
The fundamental problem remains that Tailscale has too many new "features" being added to it the whole time. New features means a whole bunch new code. Which increases bloat and exponentially increases the attack surface.
It would be really nice if you could stop shoehorning in every new feature you can think of. Remove some of the existing ones that don't really need to be there. And get your codebase back to a more focused state, get back to your roots as a VPN product.
Stop trying to be all things to all men, as the old saying goes.
If you are motivated to build a much less featureful client, it is easier now than it has ever been, and this work is ongoing.
The post you replied you clearly asked why insecure argument handling should be discovered after release. You widened that to mean “every security hole must be discovered prior to release” which made it a much easier argument to attack.
The point stands that the insecure argument handling could’ve been discovered by a security audit even when every security hole may not have been found.
Those are an ancient class of bugs that should be picked up by any competent security review.