About 50 institutions — including banks like JPMorgan Chase (JPM, Fortune 500) and Bank of America (BAC, Fortune 500) — participates in the exercise, called “Quantum Dawn 2.” To take part in the drills, each of the participating institutions will be running software developed by Cyber Strategies, a Northfield, Vt., firm that specializes in making cyber exercise software for financial institutions. Karl Schimmeck, SIFMA’s vice president of financial services operations, declined to share specifics of what exactly the simulated threats would look like, but similar drills in the past have looked like a giant, computerized version of roleplaying game Dungeons and Dragons.