Content that is created within Cloud CMS can be automatically checked for viruses. The Cloud CMS virus scanner hooks in prior to your content be written or modified within the system so that detection can filter out any bad content ahead of write. As such, nothing malicious will be written into Cloud CMS (and therefore, nothing malicious can be retrieved from Cloud CMS).
The Cloud CMS antivirus support is disabled by default but can be enabled at the platform level if you are a manager or administrator of your content platform.
Simply go under Platform > Platform Settings and then select the checkbox for "Enable Antivirus" checks. Save your changes and from that point forward, all content that you upload to Cloud CMS will have an antivirus check performed.
Bear in mind that your upload performance will be impacted when Antivirus checking is enabled. Cloud CMS performs the check ahead of write to the DB so there is some extra time incurred with every upload.