Russia, the U.S., and a U.N. arms-control committee are in talks to limit the military use of cyberspace and to strengthen Internet security. The fact that Americans are participating is a major shift after years of rejecting requests to talk to Russia, which wants an international treaty to control cyberwarfare similar to treaties that limit the spread of biological, chemical, and nuclear weapons. Officials say that the Obama administration has recognized the need for a new approach to stem the international arms race now that more countries are developing e-weapons. Though Russian and American interpretations of the talks differ, both sides agree there is forward momentum. There are now thousands of Internet attacks on government and corporate computers each day.