The amount of e-mails I get of the form "Important information regarding your xxxxx account" (which essentially is just code for "we've been hacked and your data has been stolen") is quite concerning, but not surprising. Security by obscurity was always big in most companies, as long as the bar to carrying out sophisticated attacks was putting a costly IT professional to the task you could be relatively relaxed as no one would bother to hack your stupid little e-shop, but now carrying out such an attack costs a few cents to a few dollars at most, that changes the game entirely and everyone is a target.
This summer I had my Docker registry poisoned with malware artefacts, which again is something that no sane attacker would do before as it required downloading my images, carefully modifying them and then overwriting them, ensuring they work as before. Now it's just a simple prompt away. I am definitely ramping up my defenses, everything that doesn't need to be Internet connected goes behind double VPN and port knocking schemes, essentially making my infrastructure invisible from the outside, all unknown packet types get hard dropped, end-to-end encryption of all internal traffic, web endpoints behind CDN proxies and WAF providers (as much as I hate doing that), double and tripe security mechanisms everywhere, maximum restriction of privileges, ultrafast automated patching and AI based continuous monitoring, audits and interventions. You should also get used to that, this will surely still get much worse as attacker tooling gets better.