A security researcher at Google’s Project Zero project has switched to Apple.

A researcher who worked at Google Project Zero will leave the security team and switch to Apple to help iPhone makers improve the security of iOS and other operating systems. Brandon Azad revealed on Twitter on Saturday that he had confirmed that he would leave Project Zero next week to work for Apple. He will join Apple in “continuing my work to improve the security of Apple devices.”

A security researcher at Google's Project Zero project has switched to Apple.

Project Zero is Google’s security research team that focuses on finding security issues and vulnerabilities in software, including Google’s own products and those of other large companies. The team works to improve the security of devices and software used by the public by identifying problems with device manufacturers and then ethically disclosing the issues identified.

This includes collecting zero-click bugs in Apple’s Image I/O framework that affect all of Apple’s major platforms, as well as discovering vulnerabilities discovered and exploited by hackers targeting the iPhone.

Azad is known for his work on iOS, and he has been “remembered” several times in Apple’s patch notes for iOS and macOS. By switching to Apple, Azad may be able to help plug some of the security vulnerabilities he discovered from outside before they were discovered by research teams like Project Zero.

In a tweet, Azad called his days at Project Zero “wonderful” and said he was “honored to share this wonderful mission” and that his colleagues were “one of the kindest and smartest people I’ve ever met, and I’ve learned a lot from them.” He added that he then thanked them and urged everyone to “continue with the hacker’s mission.”

A security researcher at Google's Project Zero project has switched to Apple.