Signal is an encrypted messaging application owned by the nonprofit Signal Foundation, known for its end-to-end encryption. The app has drawn attention in a controversy in Bucks County, Pennsylvania, involving allegations that school board members used Signal to communicate after being instructed to retain records related to a Sunshine Act lawsuit. This has raised concerns about the potential destruction of evidence, as Signal's auto-delete feature may violate federal record retention laws. Additionally, during the Trump administration, Mike Waltz inadvertently included a journalist in a Signal chat discussing a military strike, raising questions about the appropriateness of using commercial messaging for sensitive government communications. The use of auto-deleting messages has sparked debate regarding public accountability and compliance with the Presidential Records Act, as many records must be retained for a minimum of two years.