Last month in this column, I wrote about how businesses need to “lock up the front door” to their systems to prevent phishing attacks and take a multi-tiered approach to rethinking the identity of their employees, partners, and customers. And while we have been banging this drum for quite some time, a new villain has reared its head. In recent weeks, we’ve seen glaring examples of the harm that bad actors have caused to a company’s financial viability and product reputation due to confusion caused by the new ownership and policies at Twitter. Social media security has just risen to be a top pr…