Gong CRM Data Accessed in Klue OAuth Breach
Gong, a revenue intelligence platform, was among the confirmed victims of the Klue OAuth breach. The Icarus extortion group compromised Klue's infrastructure, a market intelligence platform, gaining access to CRM data of its customers, including Gong. The attack, which occurred on June 11, 2026, exploited a compromised legacy credential at Klue.
Signal context
First seen: Jun 26, 2026
Last updated: Jun 29, 2026
Status: Public signal
Key points
- Victim of Klue OAuth breach.
- CRM data accessed.
- Threat actor: Icarus extortion group.
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: Information
Likely country: Location not provided
Watch internet-facing systems, credential abuse and exploit activity.
- Source type: outside the affected organization
Impact area: Confidentiality
Likely asset: User or customer data
- 32 signals in the same sector
- 97 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.
22nd June – Threat Intelligence Reporthttps://research.checkpoint.com/2026/22nd-june-threat-intelligence-report/Public source from research.checkpoint.com.
Security Check-in Quick Hits: Tata Electronics Breach, Klue Supply Chain Attack, FortiBleed Campaign, libssh2 Flaw, and Cisco CUCM Exploitationhttps://www.rodstrent.com/post/security-check-in-quick-hits-tata-electronics-breach-klue-supply-chain-attack-fortibleed-campaign-libssh2-flaw-and-cisco-cucm-exploitationPublic source from rodstrent.com.
LastPass confirms data breach after hacker compromises supply chain — here's what we knowhttps://www.techradar.com/pro/security/lastpass-confirms-data-breach-after-hacker-compromises-supply-chain-heres-what-we-knowPublic source from techradar.com.
https://www.bankinfosecurity.com/klue-confirms-oauth-token-theft-led-to-salesforce-data-heist-a-25442https://www.bankinfosecurity.com/klue-confirms-oauth-token-theft-led-to-salesforce-data-heist-a-25442Public source from bankinfosecurity.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.
Related signals
Grouped by why the signal is relevant.
KDDI Corporation Data Breach Exposes up to 14.2 Million Email Logins
Japanese telecommunications operator KDDI Corporation disclosed a data breach where threat actors gained unauthorized access to one of its email systems. This system was also used by five other internet service providers (ISPs) in Japan. The company discovered the compromise on June 17, 2026, and responded by blocking the attacker and implementing defensive measures. The investigation determined that hackers exploited a vulnerability in unnamed third-party software. Up to 14.2 million email addresses and passwords, including those of current, former, and inactive customers, may have been exposed. Some passwords were stored in hashed and/or encrypted form, but the company did not specify the encryption type or the percentage of plaintext passwords. KDDI has reported the incident to Japanese privacy and telecommunications regulators. The breach impacts KDDI Corporation and its partner ISPs.
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BIGLOBE Inc. Affected by KDDI Corporation Data Breach
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JCOM Co., Ltd. Affected by KDDI Corporation Data Breach
JCOM Co., Ltd., a Japanese internet service provider, was impacted by a data breach originating from an email system provided by KDDI Corporation. Threat actors gained unauthorized access to this shared system by exploiting a vulnerability in third-party software. This led to the potential exposure of up to 14.2 million email addresses and passwords across all affected ISPs. JCOM customers' email addresses and passwords may have been compromised.
NIFTY Corporation Affected by KDDI Corporation Data Breach
NIFTY Corporation, a Japanese internet service provider, was impacted by a data breach originating from an email system provided by KDDI Corporation. Threat actors gained unauthorized access to this shared system by exploiting a vulnerability in third-party software. This led to the potential exposure of up to 14.2 million email addresses and passwords across all affected ISPs. NIFTY Corporation customers' email addresses and passwords may have been compromised.
STNet, Inc. Affected by KDDI Corporation Data Breach
STNet, Inc., a Japanese internet service provider, was impacted by a data breach originating from an email system provided by KDDI Corporation. Threat actors gained unauthorized access to this shared system by exploiting a vulnerability in third-party software. This led to the potential exposure of up to 14.2 million email addresses and passwords across all affected ISPs. STNet customers' email addresses and passwords may have been compromised.