Cyberhaven Suffers Cyberattack via Phishing Campaign, Malicious Code Injected into Chrome Extension
Cyberhaven, a cybersecurity provider, fell victim to a sophisticated cyberattack with the initial attack discovered on December 24, 2024. The breach began when a Cyberhaven employee was targeted by a phishing campaign, compromising an administrative account associated with Cyberhaven's Chrome Web Store. This allowed attackers to inject malicious code into its browser extension, affecting over 400,000 users and exfiltrating sensitive data such as cookies and session tokens. The incident was part of a broader campaign targeting at least 35 Chrome extensions.
Signal context
First seen: Dec 24, 2024
Last updated: Jul 1, 2026
Status: Public signal
Key points
- Cyberhaven experienced a cyberattack, with the initial attack discovered on December 24, 2024.
- A phishing campaign compromised a Cyberhaven employee's Chrome Web Store account.
- Malicious code was injected into Cyberhaven's browser extension.
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: Retail Trade
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
- 1 signal in the same sector
- 88 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
Related signals
Grouped by why the signal is relevant.
Healthcare AI Company Xsolis Suffers Data Breach Impacting 1.4 Million Individuals
Healthcare AI company Xsolis disclosed a data breach affecting nearly 1.4 million individuals. The incident stemmed from a targeted phishing attack on January 20, 2026, which gave attackers unauthorized access to files containing sensitive patient information. The compromised data potentially includes names, dates of birth, Social Security numbers, health insurance details, and medical treatment records. Xsolis confirmed the incident has been contained and is notifying affected individuals, offering free credit monitoring.
French government messaging platform Tchap breached via compromised user account
DINUM, the French government's digital affairs directorate, warned that hackers breached Tchap, France's encrypted messaging platform for public sector workers, using a compromised user account. The incident was detected by ANSSI, after which the affected account was blocked and an investigation launched into what conversations and data may have been accessed. DINUM has notified France's data protection authority, CNIL, due to the potential exposure of personal data. A threat actor claimed responsibility, alleging they used social engineering to access an education-related account and scrape messages, account information, and files, including 13.5GB of data from the French tax authority and other civil servants.
French Government Messaging Service Tchap Breached via Hijacked Account
Tchap, the French government's encrypted messaging platform, suffered a data breach after a user account was compromised through social engineering. Attackers reportedly scraped 13.5GB of data, including 560,000 messages and information on over 73,000 accounts, such as email addresses, organization details, meeting links, and account and device metadata, from the French tax authority and other civil servants. DINUM, the digital affairs directorate of the French government, issued a warning about the incident. The breach was disclosed on June 12, 2026.
ServiceNow Discloses Security Incident Exposing Customer Data
ServiceNow disclosed a security incident on June 12, 2026, where customer data was exposed due to an unauthenticated API vulnerability. The company patched the vulnerability but did not provide specific details on the exact data impacted or the number of affected customers. ServiceNow instances typically store sensitive enterprise information, including IT support tickets, employee records, internal documentation, asset inventories, security incident reports, workflow data, and configuration details for corporate systems and services.
Malicious 'Edgecution' Extension Exploits Microsoft Edge Native Messaging for Ransomware Deployment
Security researchers reported on June 25, 2026, the discovery of a new malware campaign dubbed 'Edgecution,' which utilizes a malicious Microsoft Edge extension to deploy ransomware and a Python-based backdoor. The extension abuses the Native Messaging API to escape the browser sandbox and establish a persistent system-level executor. Attackers are reportedly using Microsoft Teams for social engineering, directing victims to fake 'Outlook Updates Management Console' websites to trick them into installing the malicious extension. This campaign is believed to be operated by an Initial Access Broker (IAB) linked to the 'Payout Kings' ransomware operation.
CTIVD: AIVD en MIVD verwerken persoonsgegevens in bulkdata onrechtmatig
The Dutch intelligence services, AIVD and MIVD, have unlawfully processed personal data in bulk datasets, according to a ruling by the Committee for the Supervision of the Intelligence and Security Services (CTIVD). The report, published on July 1, 2026, states that groups of employees had unauthorized access to personal data, and large quantities of data were stored for too long. The bulk datasets, sometimes containing millions of records, include names, phone numbers, location data, social media data, and communication content, sourced from government agencies, commercially available datasets, or stolen datasets offered by criminals. The CTIVD has issued thirteen recommendations to improve the situation.