From hungry squirrels to cyberattacks, exchange outages roil markets

By John McCrank
NEW YORK (Reuters) - Trading on the Tokyo Stock Exchange <.TOPX> was brought to a standstill by a hardware failure on Thursday, in the worst-ever outage for the world's third-largest equity market.
Exchange outages, caused by software and hardware glitches, cyberattacks, and even hungry squirrels, have roiled markets and shaken investor confidence for decades, as trading has moved from the floors and pits of bourses to electronic systems that match trades at nearly the speed of light.

Here are some of the major outages:
Aug. 28: New Zealand's stock exchange <NZX.NZ> resumed trading after four consecutive days of disruptions in the wake of cyberattacks.
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