Insurers are limiting how much coverage energy companies can buy to protect themselves against a major attack by hackers, potentially leaving investors, customers and taxpayers on the hook for sizable losses. Brit Insurance, a syndicate that works with Lloyd’s of London, limits cybersecurity policies to around $300 million, according to underwriter James Bright. While companies can piece together policies from different insurers to boost that limit, the costs can be prohibitive, often requiring third-party assessments of security that can need upgrading. Bloomberg