OAS:OpenAPI Editor/Security/Inherit Global Security
Inherit Global Security
Globally defined security is inherited automatically by all operations unless overridden by individual operations. An operation may choose to use less, more, or no security at all.
If you want to restore operation security back to default global security. Then, select the operation from the left view, right-click the root node: Security Requirements (in the right editor), and select Inherit Global Security from the pop-up menu.