US STOCKS-Wall St dips on Ukraine concerns, but data strong
* Investors concerned by report of Russian troop movements in Ukraine
* U.S. GDP revised higher in Q2, jobless claims fall
* Banks in focus after reports of cyber attacks
* Indexes down: Dow 0.3 pct, S&P and Nasdaq 0.2 pct (Updates to midday trading)
By Ryan Vlastelica
NEW YORK, Aug 28 (Reuters) - U.S. stocks fell moderately on Thursday after Ukraine's president said Russian forces had been brought into his country, returning focus to the volatile region, though the latest round of U.S. economic data pointed to improving conditions.
Worries over tension abroad had largely faded from Wall Street, with major indexes seeing few negative days over the past two weeks and both the Dow and S&P hitting records.
Ukraine's security and defense council said the border town of Novoazovsk and other parts of Ukraine's south-east had fallen under the control of Russian forces who, together with rebels, were staging a counter-offensive.
While few U.S. companies have heavy exposure to either country, investors are worried about the potential fallout from any escalation in tensions, including increased sanctions. Continuación...