Hackers target stock exchange
15 February 2012, 14:56
Washington - Hackers have targeted the public websites of the operators
of the Nasdaq and Bats stock exchanges over the past two days with cyber
attacks that disrupted the sites but had no impact on trading.
Nasdaq.com website was briefly inaccessible at times on Tuesday
although it was back online and functioning normally late in the day.
did not immediately reply to an inquiry from AFP but The Wall Street
Journal quoted a spokesperson as saying that "during the past 24 hours,
Nasdaq OMX has experienced intermittent service disruptions on our
The Kansas-based Bats, which operates the
BZX and BYX exchanges, said the Bats public website, "along with other
securities industry websites", was hit by a Distributed Denial of
Service (DDoS) attack on Monday.
"Our trading systems were not
affected and there were no Exchange customer disruptions associated with
the incident," a Bats spokesperson said.
"Our website is used to
display general information about our market activity for the casual
user, and there are no critical functions supported through our general
public site," she said.
"We worked with our Internet Service
Provider and swiftly returned our website to a normal operating state,"
said the Bats spokesperson. "Our trading systems continue to operate
In a DDoS attack, a large number of computers
are commanded to simultaneously visit a website, overwhelming its
servers and knocking it offline.
The hacker group Anonymous
claimed on Friday to have rendered the website of the Central
Intelligence Agency briefly inaccessible with a DDoS attack.
in January also briefly knocked the websites of the US Justice
Department and the Federal Bureau of Investigation offline.
There was no immediate claim on Twitter feeds used by Anonymous for the attacks on the Nasdaq and Bats websites.