security level

noun
UK /sɪˈkjʊərəti ˈlevəl/
US /sɪˈkjʊrəti ˈlevəl/

A security level is how safe or protected a place or thing is.

The airport raised its security level after the warning.


OTHER MEANINGS

2. A rank that shows how much secret information a person is allowed to see.

Only staff with the highest security level can enter the control room.

3. A setting on a device or system that controls how much protection it uses.

You can change the security level in the app's settings menu.

4. A stage in a scale that tells how serious a danger is.

The building moved to a higher security level during the event.