REUTERS/Philippe Wojazer
Matlack says Falciani is currently "hopscotching around Europe" while Swiss authorities (among others) pursue him.
He's believed to have helped other countries expose $260 billion in tax fraud.
Matlack quotes Falciani saying he and
Falciani also claims he alerted superiors to his concerns but found them unresponsive, adding he also began having "doubts about Swiss justice." Matlack says HSBC denies receiving any warnings.
“I really felt I had no choice,” Falciani says. “I have a family, a daughter. I had to draw a line somewhere.”