Huntress Affected by Klue Supply Chain Attack, Salesforce Data Exfiltrated
Cybersecurity company Huntress was among the organizations affected by the Klue supply chain breach, which involved the compromise of OAuth tokens and subsequent data exfiltration from connected Salesforce environments. Salesforce disabled the Klue Battlecards app integration on June 19, 2026, due to unusual activity. Huntress confirmed that data copied from its Salesforce account included business contacts, price quotes, and other sales-related data and messaging. However, no threat data, passwords, payment card information, or engineering data related to the Huntress agent or telemetry was affected. Extortion emails were sent to some Huntress staff on June 16, 2026, by the threat actor Icarus.
Signal context
First seen: Jun 19, 2026
Last updated: Jun 29, 2026
Status: Public signal
Key points
- Huntress affected by the Klue supply chain breach.
- Salesforce data, including business contacts and sales-related information, was exfiltrated.
- No threat data, passwords, or payment card information affected.
Signal analysis
BetaThis analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.
Sector: Finance and Insurance
Likely country: Location not provided
The feed marks multiple actor roles. Treat this as a review signal rather than a final attribution.
- Source type: outside the affected organization
- Source type: possible insider or internal misuse
Impact area: Confidentiality
Likely asset: User or customer data
- 21 signals in the same sector
- 93 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
More Cybersecurity Firms Disclose Impact From Klue Hackhttps://www.securityweek.com/more-cybersecurity-firms-disclose-impact-from-klue-hack/Public source from securityweek.com.
Top 5 Cybersecurity News Stories June 26, 2026 - DIESEChttps://diesec.com/top-5-cybersecurity-news-stories-june-26-2026/Public source from diesec.com.
Klue OAuth breach victim list grows as Icarus hackers claim attack - Bleeping Computerhttps://www.bleepingcomputer.com/news/security/klue-oauth-breach-victim-list-grows-as-icarus-hackers-claim-attack/Public source from bleepingcomputer.com.
Salesforce Disables Klue App Integration After OAuth Token Abuse Exposes Customer Data - The Hacker Newshttps://thehackernews.com/2026/06/salesforce-disables-klue-app.htmlPublic source from thehackernews.com.
Klue Supply Chain Breach Exposes OAuth Tokens and Salesforce Data in Multi-Stage Cybersecurity Incident (June 2026) - Rescanahttps://www.rescana.com/post/klue-supply-chain-breach-exposes-oauth-tokens-and-salesforce-data-in-multi-stage-cybersecurity-incident-june-2026Public source from rescana.com.
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