Mr Baxter claimed "appropriate action" had been taken relating to the two staff members, but would not go into more detail.
He said a review of all overseas financial transactions this year confirmed the so-called "whaling" attack was a one-off incident.
"The scam involved email correspondence, ostensibly in the Chief Executive's name, to order the transfer of funds to a Turkish bank account," the Fire Service said.
Whaling scams target high-level executives, using email addresses similar to employee addresses, to make it appear as though they're requesting the funds.
Te Wananga o Aotearoa also fell for a whaling scam this year, and was working to retrieve the money after its chief financial officer transferred some $118,000 to an offshore bank account in the con.