Christopher Krebs is an American cybersecurity official who served as the first director of the Cybersecurity and Infrastructure Security Agency ([[CISA]]), a position he held from the agency's establishment in November 2018 until his dismissal in November 2020. At CISA, Krebs led federal efforts to secure election infrastructure and counter [[Disinformation]] related to voting systems. His work during the [[2020 Presidential Election]] was widely praised by election officials from both parties. Krebs was fired by [[Donald Trump]] via Twitter on November 17, 2020, after CISA issued a statement calling the 2020 election "the most secure in American history." This directly contradicted the Trump campaign's claims of widespread voter fraud, which became central to the [[Election Denialism]] movement. Krebs subsequently became a public figure in debates over election integrity and cybersecurity governance. In 2025, the Trump administration's Department of Justice opened an investigation targeting Krebs and his former colleagues, a move that drew criticism from cybersecurity professionals and civil liberties advocates as politically motivated retaliation. Krebs has continued to work in the private cybersecurity sector and has spoken publicly about the importance of nonpartisan election security.