The Dropbox Sign breach involved threat actors accessing and stealing data related to all users, including phone numbers, hashed passwords, and authentication information such as API keys, OAuth tokens, and multi-factor authentication. This breach is significant as it affects e-signatures, impacting various business transactions that relied on Dropbox Sign. Security professionals highlighted the risk posed by compromised API keys, considering their static nature and potential for automated access to sensitive services
The breach's repercussions extend beyond Dropbox, potentially affecting corporate ecosystems through password reuse. The incident underscores challenges in cybersecurity, emphasizing the importance of security assessments during acquisitions. The compromised data may lead to fraudulent campaigns targeting both parties of document signatures. This breach also emphasizes the ongoing struggle with password security and account access management, highlighting the need for continuous vigilance and collaboration between cybersecurity and IT teams to secure environments effectively. https://www.scmagazine.com/news/attackers-steal-api-keys-oauth-tokens-in-dropbox-sign-breach