The n0n ransomware group listed Chartboost LLC on its data leak site on 2026-11-06. Country: US Sector: Technology Claim as published on the leak site: mobile advertising · United States | The internal business records of a mobile advertising network: monthly publisher account balance and earnings snapshots covering 185,545 accounts, January 2018 through September 2026; Advertiser and publisher performance reports from its data warehouse, 1,129,048,884 rows naming 14,497 advertiser companies and 43,211 publisher companies with their impressions, clicks, installs, spend and earnings; Marketplace transaction records with auction and bid pricing,