Beijing has repeatedly denied hacking the United States and other rival powers.
A spokesman for Torrent said he was "not involved in criminal activity such as terrorism or drug trafficking that would justify a judicial order to intervene on his phone."
The employee had access to general information relating to a programme that allows each legislator to bring 50 people from their constituency for a parliamentary visit each year.
Multiple activists have been arrested for making anti-government statements.
Syria suspected of using migrants as agents to infiltrate Germany
The journalist's citizenship was withdrawn in December with no reason given.
Russia says Whelan was caught red-handed with a computer flash drive containing classified information.
‘The Operative’ takes the fun out of the spy game
Alumni of the 8200 Unit, which develops hacking tech, are high profile targets for foreign regimes wanting to exploit Israeli expertise for their own gain.
Bart Eeckhout leveled the allegation against Michael Freilich in an op-ed titled “Anti-Semitism” that was published Saturday in the left-leaning De Morgen newspaper