U.S. cyber intelligence staff is vastly outnumbered by Chinese hackers, Federal Bureau of Investigation Director Christopher Wray told Congress as he pleaded for more money for the agency.

“To give you a sense of what we’re up against, if each one of the FBI’s cyber agents and intel analysts focused exclusively on the China threat, Chinese hackers would still outnumber FBI Cyber personnel by at least 50 to 1,” Wray said in prepared remarks for a budget hearing before a House Appropriations subcommittee on Thursday.

The disclosure highlights the massive scale of cyber threats the U.S. is facing, particularly from China. Wray said the country has “a bigger hacking program than every other major nation combined and have stolen more of our personal and corporate data than all other nations—big or small—combined.”