He insisted the hacking became necessary because the general secretariat of public revenues in Greece was under the control of the creditor institutions.

“The general secretariat of public revenues, within my ministry, is controlled fully and directly by the troika [creditors]. It was not under control of my ministry. . . It was controlled by Brussels,” he said.

The independent revenue office (IRO) was set up as part of Greece’s second bailout in an attempt to eliminate political interference that had helped vested interest groups with close connections to government to avoid meeting their tax obligations.

Source: Yanis Varoufakis defends ‘Plan B’ tax hack