FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
Article Id 195777

This article describes how in FortiOS v6 onwards security Profiles can be configured globally across multiple VDOMs, some or all profiles may be commonly-shared across VDOMS

Global profiles are configured under Global > Security Profiles in the GUI or
under the following config global commands in the CLI:
•    antivirus profile
•    application list
•    dlp sensor
•    ips sensor
•    webfilter profile

Global profiles are available for above security features only.

- The name for any global profile must start with "g-" for identification.
- Global profiles are available as read-only for VDOM-level administrators and can only be edited or deleted from within the global settings.
- Each security feature has at least one default global profile, available for all VDOMs.

Some security profile features, such as URL filters, are not available for use in a global profile.
1.    To edit the default global web filter, go to Global > Security Profiles > Web Filter and edit g-default.
2.    Right-click the Bandwidth Consuming category and select Block