(Bloomberg) -- Industrial & Commercial Bank of China Ltd., the world’s largest lender by assets, has been unable to convince some market participants that it’s safe to reconnect their computer networks to the bank’s US unit after a ransomware attack disrupted its systems, according to people familiar with the matter.Most Read from BloombergAltman Returns as OpenAI CEO in Chaotic Win for MicrosoftMcKinsey and Its Peers Are Facing the Wildest Headwinds in YearsHulu for $1, Max for $3: Streaming Se