The Indicators of Compromise (IOC) api can be leveraged by using any API query tool to upload/download the IOCs identified by your organization.
This article is designed as quick start guide and more detailed information about the different header and error codes can be found in the Indicators of Compromise (IOC) guide here:
Upload Indicators of Compromise (IOC)
1. POST using https://iocapi.emailsecurity.symantec.com/domains/global/iocs/upload?api-list-action=MERGE
2. Add your IOC list in csv format (attached to this KB as well)
3. Set the headers
4. Set your authentication credentials
5. Run the api command to upload the IOCs in the csv file used in step#2.