The internal records of Homeland Security Department employees were compromised after a computer break-in at a federal contractor.
Secret Service investigators say they are close to gaining a full understanding of the methods hackers used to breach Target’s computer systems last December.
Researchers say less than 20 percent of them say they are “fully prepared” to respond to hacking attempts.
The District of Columbia government has yet to offer organized across-the-board cyber-security training to its employees despite an internal recommendation last year that it improve such education.
The U.S. military has been launching cyber attacks against its opponents in Afghanistan, a senior officer said last week, making an unusually explicit acknowledgment of the oft-hidden world of electronic warfare.