This recommendation pertains to the Safari feature which warns end users about visiting suspected fraudulent websites. Rationale: Enabling a warning may help users avoid accidentally visiting known phishing or other fraudulent sites covered by this feature.
Solution
Open Apple Configurator. Open the Configuration Profile. In the left window pane, click on the Restrictions tab. In the right window pane, under the tab Apps, check the checkbox for Force fraud warning. Deploy the Configuration Profile.