This is exactly the problem that LLM assisted attacks solve. For a human attacker, the extra work to figure out a bespoke solution is too time consuming to be worth the effort. LLMs can search for vulnerabilities and spit out bespoke attacks like it's nothing. On top of this the bespoke solutions weakness leans heavily into the AI attackers advantage: response time. Even if they can just get your company's single Anthropic key, if they do it at 2am while your one infra person is on vacation, they have plenty of time to extract enough value for their effort.
I agree with the move to hyperscalers. The future (well, actually present) is going to be constantly seeing new attacks happening. The only real solution to this going to be having teams of people and agents constantly watching for these and able to deploy fixes and respond to risks immediately.
Being a small target is not helpful these days, attacks on on-prem software today simply scans the internet, or uses databases by people who have already scanned it, and is automated.
On-prem software has not been spared from the recent spat of security incidents.
For Entreprise, the shift will be towards hyperscalers as they want trust and less blame (Nobody got fired for picking AWS)
For consumers, we care about pricing and stability and control and we will move back to our own hardware or cheap VPS providers and self-host things.
The middle ground would be where the slight pain could be at in my opinion.
Mass credential stealing is just the top funnel of hacking and (compatativly) isnt that lucrative - these credentials are then sold on the black markets to the next step of hackers who use them to exploit targets.
With unpatched systems and self hosting, this second group can just set an llm at a target and have a much higher chance of success without needing credentials
It would be a dream for the infiltration hackers to have everyone self host. Unpatched and miscondigured systems would be everywhere and LLM automation could make mass scanning them and exploiting them very attractive - not mass scanning and exploiting them for credentials stealing, no! For layer 2 stuff