Cricketing legend Shane Warne has launched a spirited defence of his personal charity following a Fairfax Media report that it had avoided public scrutiny by requesting its financial records be declared confidential by the national charity regulator.

Warne threatened to launch legal action over the article during an interview before Channel Nine's coverage of the Adelaide test match on Sunday afternoon.

"We've got absolutely nothing to hide at The Shane Warne Foundation. We've never done anything inappropriate. All we've tried to do is our best endeavours to make a serious difference," Warne said.

He was responding to revelations the high-profile foundation, which has never voluntarily published its financial reports, actually sought to have its records blocked from public release by the national charities regulator.