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Should there be some form of the vault where credentials are stored, Squirro can provide the necessary decryption tools in order to decrypt values.
Content Security Policy (CSP)
The Content Security Policy for Squirro content can be defined in the server configurations. If for instance image resources that are references from within Squirro items are not loading, you can adapt the CSP accordingly to enable those cross-site references. For more information see below links.
Relevant Links: