Less than a month since major U.S. telecommunication companies such were attacked by Chinese hackers that breached systems used by U.S. intelligence to conduct wiretaps, Florida Sen. Marco Rubio is warning officials of future threats, calling it a "very serious situation."
Rubio, who is part of the Senate's Intelligence Committee, said recent attempts from Chinese nationals to tamper with U.S. telecommunication companies is cause for wider concern of national security.
