Chinese Spy Balloon Transmitted Data to Beijing During US Transit

A Chinese spy balloon that entered US airspace earlier this year successfully captured imagery and gathered signals intelligence from military installations, according to a source close to the situation. This balloon, which was able to send data back to Beijing in real time, has left the US government uncertain whether the Chinese authorities could erase its collected information during transmission.

Despite the potential for data retention, the intelligence community has expressed limited concern about the balloon’s capabilities, as it is not significantly more advanced than the signals intelligence gathered by Chinese satellites orbiting the same regions. A US intelligence official told CNN on Monday that “although analysis of the wreckage of the High Altitude Balloon remains ongoing, thus far, its flight over the United States does not appear to have provided critical new insights to the People’s Republic of China.”

“The US did not assess that the balloon presented a significant collection hazard beyond what already exists in actionable technical means from the Chinese,” said Gen. Glen VanHerck, the commander of US Northern Command and NORAD.

The US had prior knowledge of the balloon’s trajectory and took steps to safeguard sensitive locations, including censoring certain signals before the balloon could intercept them. Officials have confirmed that the intelligence community last year developed a method to track a fleet of these balloons, which are operated by the Chinese military, across global regions.

China has maintained that the balloon was originally a weather balloon that drifted off course, though US officials suggest it had some degree of maneuverability. The balloon first appeared in US airspace over Alaska in late January, then moved through Canada before lingering near Montana for several days. During this time, it was believed to be targeting strategic military sites such as Malmstrom Air Force Base.

The incident culminated in the balloon being shot down off the East Coast on February 4, which intensified diplomatic tensions between Washington and Beijing. This included the postponement of a planned visit by US Secretary of State Antony Blinken to China. A senior State Department official noted that “as the balloon floated across the US, it was capable of conducting signals intelligence collection operations.”

The surveillance program, which involves multiple similar balloons, is reportedly based in Hainan, a small Chinese province. While the US has not determined the exact size of the balloon fleet, sources indicate that the program has executed at least two dozen missions across five continents in recent years. Approximately half a dozen of these flights occurred within US airspace, though not necessarily over US territory.

CNN has reached out to the National Security Council at the White House and the Pentagon for comment. This story has been updated with additional reporting. CNN’s Alex Marquardt contributed to this report.