Observed Signal · Jun 25, 2026 · Data Breach · Source: techcrunch · Impact: 3/5 · Sentiment: Negative
Klue Hack: Stolen Customer Data Being Deleted, New Threats
Market research provider Klue confirmed a June 12, 2026 breach in which attackers stole customer data and authentication keys. Klue says it is communicating with the threat actor known as “Icarus,” which told the company it is taking steps to delete stolen customer data and that the Icarus site is down. Klue also warned customers that a second, unnamed gang is attempting to extort Klue’s customers directly after claiming to obtain samples of data from Icarus; that group published a list and demanded ransom, claiming 195 affected customers. Klue reported attackers used a 2022 third-party credential (from a limited pilot) to access systems and exfiltrate OAuth tokens that allowed login to customer clouds and databases.
A multi-customer breach of a market-research provider that exposed OAuth tokens and allowed cloud/database access risks downstream data exposure, customer trust, and operational security across MarTech and security vendors; it may prompt credential hygiene and cloud access reviews but is not a platform-level policy change.
Track Klue Signals & Market Shifts in Real-Time
Polaris7 autonomous intelligence agents track regulatory filings, primary sources, executive changes, and deal flow 24/7. Create your free Explorer workspace to monitor these entities.
Key Takeaways & Evidence Grounding
- Klue confirmed hackers broke into its systems on 2026-06-12 and stole data from an unspecified number of customers.
- Klue said it is in communication with the threat actor 'Icarus', which told Klue it is taking steps to delete data taken from Klue customers and that the Icarus site is currently down.
- A second unnamed cybercriminal gang posted a list of allegedly affected companies, claimed to have samples of data taken from Icarus, and demanded ransom, alleging 195 affected Klue customers.
- Klue says attackers used a 2022 third-party credential from a limited pilot to steal customers' OAuth tokens, which were then used to access clouds and databases.
Connected Companies & Entities
5 Entities mapped“Market research provider Klue, which was hacked earlier this month in a breach that allowed cybercriminals to steal reams of data belonging ...”
“Since then, several Klue customers have confirmed they were affected by the breach, including Gong....”
“Since then, several Klue customers have confirmed they were affected by the breach, including ... OneTrust....”
“Since then, several Klue customers have confirmed they were affected by the breach, including ... Sprout Social....”
“Market research provider Klue ... said that it is communicating with the hackers, TechCrunch has learned....”
Ontology Mapping & Concepts
Related Market Signals & Shifts
Recent verified developments and strategic activity across this market segment.
Klue hack exposes customer data across cybersecurity firms
Market intelligence provider Klue disclosed a cyberattack that allowed hackers to exfiltrate customer data from connected cloud systems. Klue said intruders gained access on June 12 using a “compromised legacy credential” tied to an integration tool that links customers’ cloud data (such as Salesforce) to Klue. The cybercrime group Icarus claimed responsibility and threatened to publish the stolen data if a ransom is not paid. Multiple Klue customers — including Gong, Jamf, HackerOne, OneTrust, Recorded Future, Snyk, Sprout Social, Tanium, Insurity and Huntress — have confirmed data theft of business contact and some account information. Klue engaged CrowdStrike for incident response and disconnected integrations to block further access. The company has not disclosed how many customers were affected or how the credentials were obtained.
Klue: 2022 Credential Used in Customer Data Breaches
Market research firm Klue confirmed that a credential issued in 2022 for a limited pilot was used by hackers in June 2026 to steal data from multiple corporate customers, including LastPass and several cybersecurity companies. Klue detected the intrusion on June 12, 2026, and disclosed the incident on June 23, 2026. Attackers leveraged access to Klue’s systems — which store OAuth tokens used to access customer data in other clouds and databases — to download data and extort impacted companies. Klue says the credential was originally provided to a third party for a pilot in 2022 but has not explained why it wasn’t revoked or what type of credential it was. A group calling itself Icarus claimed responsibility and threatened to publish the stolen data. Klue says it is conducting a comprehensive review of credential management, vendor access controls, monitoring and deployment security.
LastPass Customer Data Stolen via Klue Breach
Password manager LastPass is handling a data breach after attackers accessed customer information by compromising a third‑party market intelligence platform, Klue. Klue detected unauthorized activity on 2026-06-12 and says attackers likely used old, compromised credentials for an integration service. Through that access, attackers viewed LastPass support tickets containing customer names, phone numbers, email addresses, home addresses, support-case details and sales-relevant information; payment data included in support tickets may also have been exposed. LastPass says its internal systems and user vaults were not compromised, and it is notifying affected users by email. Actions taken include suspending Klue employees’ access to LastPass data, rotating API access tokens, and planning additional protections. Users are advised to monitor payment activity and consider changing associated email addresses to reduce phishing risk.
Track Real-Time Market Signals & Shifts
Set up custom watchlists to receive automated, evidence-grounded executive digests whenever material signals or shifts occur across your tracked landscape.