Shortly after the election, senior government officials insisted that it was the “most secure” in American history, deflecting concerns about security, including about voting systems and mail-in-ballots. One of the lead government officials responsible for election security, Chris Krebs, the then-director of the Cybersecurity and Infrastructure Security Agency, testified to the Senate after the election that he had approved an assessment that said “the 2020 election was the most secure in U.S. Maricopa exfiltration of voter registration dataThe latest evidence released by the White House this week shows that the FBI investigated a breach of voter registration data in Arizona’s largest county in the days before the 2020 election. In the subsequent years, Beijing was successful in obtaining information from those voter registration databases through buying, stealing or hacking, intelligence officials later said. This month, in a joint statement, U.S. spy agency chiefs clarified that China’s targeting of Americans' voter registration files that began during the 2020 election likely meets the intelligence community's definition of "election interference."