This extends beyond vulnerabilities to bugs in general too. No company, or programmer for that fact, is immune to making mistakes. Some people like to think tha

This extends beyond vulnerabilities to bugs in general too. No company, or programmer for that fact, is immune to making mistakes. Some people like to think that if you're a very good programmer you'll magically write bug-free code, but that just doesn't happen. This is why extensive testing and having multiple eyes look at something is good practice. And even then, with the multiple layers of redundancy and everything, you still see AWS/GCP/Azure having downtimes, you still see bugs and crashes and exploits, from the small startups to the top tech companies.