NYSE Euronext Statement Regarding Cyber Attack

NYSE Euronext has been informed by authorities that its public Web site -- nyse.com -- has been the subject of a "denial of service" cyber attack. To date, nyse.com has not experienced any impact, which may be the result of its security design. It is important to note that such an attack has not and could not impact the trading and data systems of NYSE Euronext markets, which operate on private networks. We will continue to work with authorities on this situation.