Apple has deployed an alarming threat notification to an unspecified number of users in 110 countries — experts advise not to ignore it.

The fresh batch was sent out yesterday to Apple users who may have been targeted with spyware capable of hacking into their devices. The notifications can be sent to iPhones, iPads, and Mac computers.

The notifications reads: “Apple detected a mercenary spyware attack targeted at your iPhone. There are actions you can take now to protect your