Geneva: Herve Falciani, the former HSBC employee whose disclosures uncorked the "Swissleaks" scandal on bank-supported tax evasion, was sentenced in absentia on Friday to five years in prison, Switzerland's ATS news agency said.
Falciani, who worked as an IT specialist with HSBC, was convicted of industrial espionage by a federal court in the southern Swiss town of Bellinzona.
The 43-year-old French-Italian national refused to travel to Switzerland to appear at trial.
Falciani can appeal his conviction at Switzerland's highest court, but he will not serve any prison time in the federation so long as he remains in France, which does not extradite its citizens.
The former HSBC employee leaked a cache of documents allegedly indicating the bank's Swiss private banking arm helped more than 120,000 clients hide 180.6 billion euros (USD 205.4 billion) from tax authorities.
Falciani has been celebrated as a whistleblower by some, but Swiss authorities claimed he was motivated by money, citing evidence that he wanted to sell the data he stole.
Falciani has denied that he was only seeking financial gain, insisting he had wanted to expose how banks support tax evasion and money laundering.
Prosecutor Carlo Bulletti had sought a six-year prison term, while defence lawyer Marc Henzelin asked for a suspended sentence.