[antiframe]

Not terribly fair. When Windows decided running everything as administrator was bad and to add a visual sudo-like prompt, Apple made fun of them for it, but it was Microsoft reacting to a changing threat landscape then too.

[klodolph]

Vista gets maligned but UAC is a good feature to have around, and Vista introduced it.

[Semaphor]

My first thought was "But back then those prompts were constant, making them almost useless", though maybe that did actually help by making software vendors rely less on admin rights?

[charcircuit]

UAC is not a security boundary. Malware can bypass it if it wants.

[pjmlp]

It helps to actually enable having to type a password instead of clicking on Yes.

However yes, security is much more than an UAC dialog.