Threat actors are abusing DocuSign's Envelopes API to create and mass-distribute fake invoices that appear genuine, impersonating well-known brands like Norton and PayPal. [...]
source https://www.bleepingcomputer.com/news/security/docusigns-envelopes-api-abused-to-send-realistic-fake-invoices/
source https://www.bleepingcomputer.com/news/security/docusigns-envelopes-api-abused-to-send-realistic-fake-invoices/