Even if you don’t use Signal, you certainly remember Signalgate. That was the scandal in March when senior U.S. officials used a private messaging app to communicate about a military strike in Yemen — and included a journalist in the chat. It thrust Signal and Signal Foundation President Meredith Whittaker into the spotlight. But she’s made headlines before as a Google employee turned vocal tech critic. On this week’s episode of POLITICO Tech, host Steven Overly sits down with Whittaker to discuss the future of Big Tech, privacy risks in an AI world and how Silicon Valley is shaping politics.  Steven Overly is the host of POLITICO Tech and covers the intersection of politics and technology. Nirmal Mulaikal is the co-host and producer of POLITICO Energy and producer of POLITICO Tech. Learn more about your ad choices. Visit megaphone.fm/adchoices