Using wd blue as a second drive, what happens if someone takes it and puts it in another computer?

using a wd blue as second drive

what happens if someone takes it and puts it in another computer ?

will they be able to access the data or will it be protected by my windows password ?

is the same true for the primary ssd drive ?

Hello,

If the drive is not encrypted and you put in on another computer you should be able to access all the data on it.