Wall Street traders are still going into offices — for now. Here's how WFH could set off a tech scramble at the worst possible time.

· Traders, whose working lives revolve around tightly packed, closely-monitored trading floors and critical tech infrastructure, are among the last groups on Wall Street still heading into offices and backup locations en masse.
· At one large Wall Street firm, universal WFH capabilities aren't yet in place. Tech and compliance...