Chinese hackers have infiltrated major telecommunications networks, gaining access to the call logs and data of millions of Americans, including President-elect Donald Trump. But while the breach was first detected back in the spring, U.S. officials acknowledged this week that they’ve not yet been able to stop it. On POLITICO Tech, cybersecurity reporter Maggie Miller joins host Steven Overly to explain why the attack has been so hard to contain and how people can protect their information.

Learn more about your ad choices. Visit megaphone.fm/adchoices