The lamashtu ransomware group listed WOHA on its data leak site on 2026-05-06. Country: SG Sector: Hospitality Domains named: woha.net Claim as published on the leak site: WOHA is a renowned Singapore-based architectural practice founded in 1994 by Wong Mun Summ and Richard Hassell. The firm is globally recognized for its integration of environmental and social principles into high-density urban settings.