With plenty of employees still working remotely months into the pandemic, “I actually think it’s more important now than it was before,” says Muse career coach Angela Smith. “From the perspective of how do we make remote work work,” she says, “overcommunication is one of the hallmarks.” In a world where you can’t see whether your colleagues are at their desks, being clear about when you’re working—and when you’re not—is crucial to keeping things running smoothly.
By making this information public, you have unwittingly given a hacker everything they need to complete a Business email Compromise (BEC) scam. In these BEC attacks, the hacker commits fraud by pretending to be a senior employee and will attempt to coerce the recipient into complying with a fraudulent request – such as wiring company money.

I recently described myself as being “out of the virtual office.” Away from the virtual office” would probably have been even more precise. I think whatever you say, people will understand what you mean.
Using autoresponder emails when you are not available at the office is a part of the professional communication between business associates. That said, you should be careful about the information you are sharing in your OOO messages.