To use VirusTotal integration in n8n, start by adding the HTTP Request node to your workflow canvas and authenticate it using a predefined credential type. This allows you to perform custom operations, without additional authentication setup. Once connected, you can make custom API calls to VirusTotal to query the data you need using the URLs you provide, for example: you can create new records in VirusTotal by making a POST request to the appropriate endpoint, such as uploading files for scanning. Additionally, you can retrieve previous scan results by sending a GET request with the specific resource ID, allowing for efficient tracking of threats over time. To update records, you may use the PUT method where applicable, ensuring you are specifying the correct resource parameters.