Is there a difference between an emulated PC and a regular one?

Question

Iron

So, when viewed from the outside (suppose websites, anti-fraud systems or desktop applications), is there a difference between an emulated PC (virtualbox, VPS) and a real one?

Answer 1

in principle, by pulling the hardware devices, you can find out that the system is running in a virtualized environment.
there are no differences for a running process - that is, the process will execute its algorithms identically, both on bare hardware and in a virtual machine.

Answer 2

the web is a sandbox, access from which to real equipment is very limited, but there is a security hole - webgl (access to the video cassette), and since the video card is emulated in a virtual machine (if gpu passthrough is not used), you can request this information and compare with what is expected for the desktop (a question of research, but there is a fundamental possibility)
For example, virtualbox gives the name of the video card

llvmpipe (LLVM 6.0, 128 bits)

and on the host system

ANGLE (NVIDIA GeForce GTX 1060 3GB Direct3D11 vs_5_0 ps_5_0)

Answer 3

From the point of view of the site or other programs (except those that work with equipment and games) - no.