Oct 17th, 2025

Cyber Attack Ensnares $4.3T Muni Market’s Key Site

Concerns over cyber risks is growing in the municipal market as MuniOS got a ransomware attack that disrupted state and local borrowers' ability to post debt documents on this platform for several days, until it went back online Thursday morning. Bloomberg's reporter Erin Hudson discussed the story on "Bloomberg Markets" with Scarlet Fu.