Hackers gained access to U.S. government systems in a months-long act of cyberespionage. While the full extent of the security breach is still being determined, Tarah Wheeler explains the third-party software vulnerability that enabled the hack, and what the incoming Biden administration's priorities should be to meet a higher bar for U.S. cybersecurity. Show notes and transcript: https://brook.gs/2WsRJrT  Subscribe to Brookings podcasts on Apple or Google podcasts, or on Spotify. Send feedback email to BCP@Brookings.edu, and follow us and tweet us at @policypodcasts on Twitter. The Current is part of the Brookings Podcast Network.