The Security panel is available from the Panel bar when you select the following tool:
If you do not see the tool, right-click in an empty area of the Panel bar and select it.
The Security panel shows all security schemes currently available in your system, both predefined and custom-created, grouped into Password Security and Certificate Security categories.
Manage Security Schemes
At the top of the Security panel, click the Security Scheme Options button to select an active item from the menu.
Apply Security Scheme: Apply a selected scheme to an open PDF document. The same function is performed if you double-click a scheme, drag it into the PDF document, or right-click a scheme and select this action. For details, see Security Properties.
Create Security Scheme: Create a Password or Certificate Security Scheme of your own, or click the Create Security Scheme button at the top of the panel, or right-click anywhere in the Security panel area and select this action. Until you create a security scheme, this is the only option available. For details, see Security Properties.
Delete Security Scheme: Delete a selected custom-created security scheme, or click the Delete Security Scheme button at the top of the panel, or right-click a custom-created scheme and select this action, or select a scheme and press Delete. Confirm deletion by clicking OK.
You cannot delete predefined security schemes.
Copy Security Scheme: Copy a selected Password or custom-created security scheme, or right-click the scheme and select this action to create a new security scheme on the basis of an existing one, with modified settings. For details, see Security Properties.You cannot copy certificate type security schemes.
Edit Security Scheme: Edit a selected custom-created security scheme, or right-click the scheme to modify and select this action. For details, see Security Properties.You cannot edit predefined security schemes.
Predefined security templates
The Security Panel offers pre-defined Security templates:
Interactive: Allows access to the full range of password or certificate options.
Privacy: Lets you specify an Open password, which allows access to the document only for you and the people who have the password.
No modification: Lets you specify a Permissions Password, which allows modifications to the document or its permissions to be made only by you and the people who have the password.