Apple announced today that it will be adding a new feature called "Lockdown Mode" to the iPhone, the iPad, and the Mac. Developed to prevent attackers from exploiting a vulnerability discovered in Apple's software, at least two Israeli firms have already exploited this vulnerability and were able to break into iPhone units remotely without the user of the target iPhone tapping a button on the display. The Pegasus software, which can be used for such an attack, uses GIFs to exploit iMessages. The developers of Pegasus have been sued by Apple and have been placed on a U.S. trade blacklist. Security researchers believe that the vulnerability is found in how Apple's software handles message attachments. That is why enabling "Lockdown Mode" will block most attachments sent to the iPhone's messages app.

"Lockdown Mode" will block message attachments, FaceTime calls from unknown senders, and more

Besides blocking message attachments, enabling "Lockdown Mode" will block link previews, block invitations and Face Time calls from unknown senders. It will also turn off certain web browsing technology by default, shut down wired connections to computers, and more. The feature is reportedly aimed at protecting people in high-visibility jobs who could find themselves being targeted by spyware; such positions include politicians, activists, and journalists. Apple adds, "When iPhone is in Lockdown Mode, it will not function as it typically does. Apps, websites, and features will be strictly limited for security, and some experiences will be completely unavailable.

Apple will also make a $10 million grant to organizations that help prevent cyberattacks from taking place.