First line of defence
From ACT Wiki
1. Banking.
The first, second and third lines of defence are identified by the Bank of England in relation to establishing and defending fair and effective markets.
These 'lines of defence' are the governance and controls to protect against risks in an organisation.
The first line of defence is risk mitigation and control within the business function that generates the risks, in particular through policies and procedures, training and line management oversight.
2.
Similar concepts and structures in other organisations.
