Foreign Governments Increasingly Use U.S. Servers to Stage Cyberattacks

U.S. lawmakers and security experts are voicing concern that foreign governments are staging cyberattacks using servers in the U.S., in an apparent effort to avoid detection by America’s principal cyberintelligence organization, the National Security Agency. When hackers recently targeted servers running Microsoft Corp.’s widely used Exchange software, they employed U.S.-based computers from at least four service providers to mount their attack, according to an analysis by the threat intelligence company DomainTools LLC.