Michaelia Cash says her threat to name Bill Shorten's apparent rumour-stricken staff was meant to show how political staff should never be named in public attacks.
The Liberal senator says she's unreservedly withdrawn her comments if anybody in the opposition leader's office was offended.
Senator Doug Cameron asked in a Senate hearing last month about staff transfers into her office, including asking the name of her new chief of staff, who had previously worked in another Liberal office.
"I'd been asked by Senator Cameron to name staff in my office and the point I was making is you should never ever name staff members," she told the Daily Telegraph's Miranda Devine Live program on Monday.
"Doug Cameron quite happily named my staff members and I was not going to stand for that line of questioning."
The questioning came shortly after Prime Minister Malcolm Turnbull announced his ban on ministers having sex with staff in the wake of then-National leader Barnaby Joyce's affair with his former media adviser.
But Senator Cash had also faced earlier questions about whether a former media adviser "took a bullet" for her by quitting after informing media about federal police raids on trade union offices.
Mr Turnbull backed Senator Cash after the incident, saying she had been "bullied and provoked" by Senator Cameron.