US singer Richard Marx said last week that he had intervened to help restrain a disruptive passenger on a Korean Air flight from Hanoi to Seoul.
Crew had been "ill-trained" and "ill-equipped", Marx said.
The airlines said it would also review the use of Taser guns on board.
"Korean Air will react more firmly and actively against in-flight violence that threatens the overall safety of the flight," it said in a statement.
As part of the changes, the airline said it would be providing more training to staff and hiring more male flight attendants, making sure at least one male is on duty in the cabin for each flight, according to Reuters news agency.
Marx's wife Daisy Fuentes, who was travelling with the singer, said the staff "didn't know how to use the taser" or to secure ropes.
Taser is a brand name often used to refer to electric stun guns.
"We have decided to improve our conditions and procedure on using Taser guns to cope with violent acts and disturbances on board in a fast and efficient manner," it added, but did not elaborate on how the rules would change.
The airline said that under existing rules, stun guns were permitted for use only in "grave" situations - where the safety of a flight or the life of passengers and crew were in danger.
This meant staff had been "hesitant" to use the equipment, the carrier added.
Individual airlines have their own policies on what equipment they carry on board to restrain passengers
Most carriers contacted by the BBC were unwilling to give details of what kit this included, citing security concerns.

It will cover a 14.7km (nine-mile) stretch of the A6 from Randalstown in County Antrim and Castledawson in County Londonderry, either side of the Toome bypass.
Upgrading the stretches of road to dual carriageways is expected to cost Â£160m.
Infrastructure Minister Chris Hazzard said the work would "strengthen the links between Belfast and Derry".
He added that it would help to address an "infrastructure deficit" west of the River Bann.
The route will replace the existing road from Castledawson to the M22 motorway to Belfast, which sees lengthy tailbacks during peak hours on a daily basis.
"Road users and the local community will directly benefit from this new all-purpose dual carriageway as it will reduce journey times and improve road safety," he added.
"I am determined to contribute towards economy growth in a regionally-balanced way, and I believe it is vital that infrastructure projects such as this are prioritised."
On occasions during the morning rush-hour on the current route, traffic grinds to a complete standstill, resulting in traffic jams stretching for miles.
The scenario is reversed during evening rush-hour as commuters return to the north-west from the direction of the M22 motorway.
Earlier this year, Northern Ireland's roads authority said the proposed route would affect about 120 landowners.
The Department for Infrastructure said ground investigation work has begun and archaeological investigations along the route will start this week.
Construction is expected to begin in October.
Mr Hazzard added the project was "welcome news" for the construction industry.
Korean Air has said guidelines will be revised for crew to react "firmly and actively against in-flight violence", after facing criticism for its handling of an on-board incident.
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Four years of roadworks are to begin on the main road between Belfast and Londonderry road this autumn.