The veterans' health care system has found that 716 patients may have been affected during this time period, Jim Blue, regional director of the VA's Office of Public and Intergovernmental Affairs, told CNN.

CNN: STORY HIGHLIGHTS

Some train services were delayed Wednesday, Deutsche Bahn spokesman Holger Auferkamp said, but Berlin's metro system, or S-Bahn, has not been affected.

CNN: Experts defuse unexploded WWII bomb in central Berlin

As is our standard practice, customers can be assured if there is any evidence that customer or system information has been compromised, we would inform those affected as quickly as possible.

ENGADGET: T-Mobile tweaks data breach statement again, now says nothing was compromised