Board members, listen up. Tech departments know how the cyberattack kill chain is done — but so do crooks — and it’s a threat to companies and their technically illiterate leaders everywhere. Employees are the greatest weakness, falling prey to increasingly sophisticated schemes to trick them into giving away their passwords, the first step in a series enabling thieves to steal from corporate data banks. There are solutions … that are neither cheap nor easy to understand. But they’re far less costly than a data breach, now averaging $6.53 million a pop.