NV1 - Negative Vetting

NV1 is the abbreviation of negative vetting level 1, which is an Australian Government security clearance governed by the Department of Defence. An NV1 security clearance requires the applicant to provide at least 10 years of background information.

An NV1 engineer is allowed to access classified information and resources that are classified up to and including SECRET.

There are 4 levels of defence security:

  1. Baseline Vetting: permits access to classified information/resources up to and including PROTECTED.
  2. Negative Vetting Level 1: permits access to classified information/resources up to and including SECRET.
  3. Negative Vetting Level 2: permits access to classified information/resources up to and including TOP SECRET.
  4. Positive Vetting: permits access to resources at all classification levels, including certain types of caveated and codeword information.