How can big software (ex: windows xp) that has been used by millions and secured against all kinds of attacks throughout the years still manage to be insecure once its support has ended?

Question

For example a product like windows xp, it has been tested and secured by professionals throughout the years and on top of that patched against all kinds of security holes that might have appeared during that period.

Hasn’t the number of people that try to find security holes in windows xp decreased over the years when it wasn’t the main operating system from Microsoft anymore and they still manage to find security holes that a bigger group couldn’t find and hence making the operating system not secure?

In: Technology

Answer 1

All of the OS makers constantly write updates because there are people with vested interest in finding exploits. New exploits are always found because “users” are always more imaginative than software engineers.