Hackers target Nasdaq computer network

People familiar with the investigation say the exchange’s trading platform,the system which executes trades,was not compromised,according to the report.

A person involved in the Nasdaq investigation told the newspaper that so far the perpetrators “appear to have just been looking around.”

Nasdaq officials declined to comment. A telephone message left with the FBI’s office in New York was not immediately returned.

Possible motives include financial gain,theft of trade secrets or a national security threat designed to damage the exchange,the newspaper said.

The Secret Service initiated the probe involving New York-based Nasdaq OMX Group Inc. last year. White House officials also have been informed.

Investigators have not yet been able to track the cyber break-ins to any specific individual or country,but people with knowledge of the case told the newspaper some evidence points to Russia. However,they point out that hackers could be just using Russia as a conduit.

In 1999,a group of hackers calling itself “United Loan Gunmen” infiltrated the computer that runs the websites for Nasdaq and the American Stock Exchange.

The hackers left a taunting message and also claimed to have briefly created for itself an e-mail account on Nasdaq’s computer system,suggesting a broader breach in security. But at the time,Nasdaq officials said there was no evidence they manipulated financial data.