Six intelligence officials, including the heads of the CIA, FBI, and NSA, have told the Senate Intelligence Committee that they would not recommend that U.S. citizens use smartphones from the Chinese companies Huawei and ZTE, reports CNBC. As FBI director Chris Wray told the committee:

“We’re deeply concerned about the risks of allowing any company or entity that is beholden to foreign governments that don’t share our values to gain positions of power inside our telecommunications networks. That provides the capacity to exert pressure or control over our telecommunications infrastructure. It provides the capacity to maliciously modify or steal information. And it provides the capacity to conduct undetected espionage.”

In response to the intelligence officials warnings, a spokesperson for Huawei said:

“Huawei is aware of a range of U.S. government activities seemingly aimed at inhibiting Huawei’s business in the U.S. market. Huawei is trusted by governments and customers in 170 countries worldwide and poses no greater cybersecurity risk than any ICT vendor, sharing as we do common global supply chains and production capabilities.”

Huawei has been trying to enter the U.S. market as of late. One failed attempt saw a partnership with AT&T later called off.