Zito Partners Founder Rob Zito and GenTrust Chief Investment Officer Jim Besaw in The Wall Street Journal

After the 9/11 Attacks, Wall Street Bolstered Its Defenses

While advances in technology have changed markets radically, some now worry cyberattacks pose a leading threat to trading operations

The nearly weeklong stock-market shutdown that followed the Sept. 11 attacks seems unimaginable in today’s world of round-the-clock trading.

During the past 20 years, advances in technology and broad efforts to bolster U.S. market infrastructure have made such outages rare. Last year, when the coronavirus pandemic led to plunging stock prices, record volumes and an abrupt shift to remote work on Wall Street, the stock market stayed open and its core systems operated largely glitch-free.

Read more here.