Cybersecurity firms Huntress and Recorded Future have disclosed the impact of a supply chain attack that hit market intelligence platform Klue.
The attack started on June 11 and affected systems associated with software platform integrations. The hackers connected to Klue’s backend servers and executed unauthorized commands, pushing a code update to harvest OAuth tokens for customers’ Klue integrations.
Klue notified customers of the incident on June 12, warning that it had deactivated OAuth tokens for all customers and disabled integrations with Salesforce, HubSpot, SharePoint, Zoom, Gong, Chorus, Clari, Google Drive, and Slack.
According to ReliaQuest, the hackers abused the Salesforce REST API to exfiltrate large volumes of customer relationship management (CRM) data over a 24-hour window, “including a concentrated burst of nearly a thousand queries in 15 minutes and sustained extraction windows lasting over 6 hours”.
On June 17, Salesforce disabled the Klue Battlecards app integration, warning that it “detected unusual activity involving the app that may have resulted in unauthorized access to a subset of customer data via the app’s connection to Salesforce”.
