According to the officials, the latest NSA disclosure of secrets is not the result of an insider stealing documents, as occurred in the case of fugitive NSA contractor Edward Snowden.
Instead, the leaks will reveal certain NSA technical cyber intelligence gathering capabilities. The officials did not provide details about the leaks.
Certain techniques used by the NSA in cyber operations became known to technicians at a non-U.S. cyber security firm operating from Mexico. The company then contacted a news outlet with the details it uncovered.
A report detailing the breach could be made public as early as this weekend.
NSA spokeswoman Vanee Vines declined to comment.