The Bahrain All-Share Index declined by 0.30% to 1,191.56 points on Monday. Ahli United Bank ended off 1.44% at $0.658. The Bank of Bahrain and Kuwait or BBK closed unchanged at BD0.416. Earlier in the day, BBK said it achieved ISO 27001 and ISO 22301 certifications for its information security management systems and its business continuity management system from the International Organization. Standardization (ISO). BBK said both certifications had proven that it was operating in strict accordance with international standards.