On Christmas Eve, Cyberhaven, a data loss prevention company, experienced a cyberattack targeting its Google Chrome extension. The breach exposed sensitive customer data, including passwords and session tokens. The company has since taken swift measures to address the issue and prevent future incidents.
The attack occurred after a Cyberhaven employee fell victim to a phishing email, inadvertently sharing their credentials. This gave the attacker access to Cyberhaven’s systems, specifically the credentials for the Google Chrome Web Store. Leveraging this access, the attacker uploaded a malicious version (24.10.4) of the Cyberhaven Chrome extension. The compromised version was automatically updated on Chrome-based browsers and remained active from 1:32 AM UTC on December 25 to 2:50 AM UTC on December 26.
Swift Response by Cyberhaven
Cyberhaven’s security team discovered the breach at 11:54 PM UTC on Christmas Day. Within an hour, they removed the malicious extension from the Web Store. CEO Howard Ting praised the team’s dedication, stating, “Our team acted swiftly and with remarkable dedication, interrupting their holiday plans to safeguard our customers and maintain our commitment to transparency.”
While no other Cyberhaven systems, such as CI/CD processes or code signing keys, were affected, the compromised extension potentially enabled the exfiltration of user cookies and authenticated sessions for specific targeted websites. This incident underscores the persistent risks posed by phishing attacks and the critical need for robust security measures.
Mitigation Measures for Users
To mitigate the impact of the breach, Cyberhaven has advised users to take the following steps:
These proactive measures are essential to prevent further exploitation of compromised credentials.
Enhanced Security Measures
In response to the attack, Cyberhaven has implemented additional security protocols to strengthen its defenses. The company is also working with law enforcement to investigate the breach and identify the attackers, who reportedly targeted other companies as well.
This attack highlights the increasing sophistication of cyber threats, particularly those exploiting human error. Phishing remains one of the most effective tactics for gaining unauthorized access to sensitive systems. Companies must prioritize employee training on recognizing phishing attempts and establish multi-layered security frameworks to mitigate vulnerabilities.
Cyberhaven’s swift response and transparent communication reflect its commitment to customer security and trust. As the investigation continues, this incident serves as a stark reminder of the importance of vigilance in the ever-evolving landscape of cybersecurity threats.
In September 2024, American Addiction Centers (AAC) experienced a significant cyberattack that exposed the personal and health-related information of 422,424 individuals. The breach involved sensitive data such as Social Security numbers and health insurance details, prompting AAC to take immediate action to address the situation and support those impacted.
The cyberattack occurred over three days, from September 23 to September 26, 2024. AAC identified the breach on September 26 and quickly launched an investigation. The organization engaged third-party cybersecurity experts and notified law enforcement to assess the extent of the attack. By October 3, investigators confirmed that unauthorized individuals had accessed and stolen data during the breach.
Data Compromised
The stolen information included:
AAC assured clients that no treatment information or payment card data was compromised during the incident. While the exposed data could be exploited for identity theft, the company emphasized that there is no evidence linking the breach to fraudulent activity at this time.
Response and Notifications
In December 2024, AAC began notifying affected individuals, with official letters sent out just before the holiday season. These notifications outlined the breach details, the steps AAC had taken to address the incident, and the measures implemented to prevent future occurrences.
To mitigate risks, AAC offered affected individuals complimentary credit monitoring services for 12 months. The organization partnered with Cyberscout, a TransUnion company, to provide identity protection services, including:
Affected individuals are encouraged to enroll in these services by March 31, 2025, to ensure their data remains protected.
Beyond immediate support, AAC implemented enhanced security protocols to strengthen its cybersecurity defenses. The organization collaborated with leading cybersecurity experts to fortify its systems and continues to review and update its measures regularly. Additionally, AAC established a dedicated hotline to assist individuals with inquiries and provide guidance on protective measures.
Proactive Recommendations
Although AAC has found no evidence of identity theft linked to the breach, it urged affected individuals to take the following proactive measures:
AAC’s notification letters include detailed instructions on these steps to help individuals safeguard their personal information against potential threats.
AAC emphasized its dedication to protecting personal information and maintaining transparency with its clients. “We regret that this incident occurred and the concern it may have caused,” the company stated. “We take the confidentiality and security of personal information very seriously and will continue to take steps to prevent a similar incident from occurring in the future.
As investigations into the incident continue, AAC remains focused on strengthening its cybersecurity measures and rebuilding client trust. For further information, individuals can contact AAC’s dedicated hotline at 1-833-833-2770, available Monday through Friday from 8:00 a.m. to 8:00 p.m. Eastern Time.
This incident highlights the importance of robust cybersecurity measures and proactive data protection strategies to safeguard sensitive information in the digital age.
The EU Agency for Cybersecurity (ENISA) has released its inaugural biennial report under the NIS 2 Directive, offering an analysis of cybersecurity maturity and capabilities across the EU. Developed in collaboration with all 27 EU Member States and the European Commission, the report provides evidence-based insights into existing vulnerabilities, strengths, and areas requiring improvement. Juhan Lepassaar, ENISA’s Executive Director, emphasized the importance of readiness in addressing increasing cybersecurity threats, technological advancements, and complex geopolitical dynamics. Lepassaar described the report as a collective effort to bolster security and resilience across the EU.
The findings draw on multiple sources, including the EU Cybersecurity Index, the NIS Investment reports, the Foresight 2030 report, and the ENISA Threat Landscape report. A Union-wide risk assessment identified significant cyber threats, with vulnerabilities actively exploited by threat actors. While Member States share common cybersecurity objectives, variations in critical sector sizes and complexities pose challenges to implementing uniform cybersecurity measures. At the individual level, younger generations have shown improvements in cybersecurity awareness, though disparities persist in the availability and maturity of education programs across Member States.
ENISA has outlined four priority areas for policy enhancement: policy implementation, cyber crisis management, supply chain security, and skills development. The report recommends providing increased financial and technical support to EU bodies and national authorities to ensure consistent implementation of the NIS 2 Directive. Revising the EU Blueprint for managing large-scale cyber incidents is also suggested, aiming to align with evolving policies and improve resilience. Tackling the cybersecurity skills gap is a key focus, with plans to establish a unified EU training framework, evaluate future skills needs, and introduce a European attestation scheme for cybersecurity qualifications.
Additionally, the report highlights the need for a coordinated EU-wide risk assessment framework to address supply chain vulnerabilities and improve preparedness in specific sectors. Proposed mechanisms, such as the Cybersecurity Emergency Mechanism under the Cyber Solidarity Act, aim to strengthen collective resilience.
Looking to the future, ENISA anticipates increased policy attention on emerging technologies, including Artificial Intelligence (AI) and Post-Quantum Cryptography. While the EU’s cybersecurity framework provides a solid foundation, evolving threats and expanding roles for authorities present ongoing challenges. To address these, ENISA underscores the importance of enhancing situational awareness and operational cooperation, ensuring the EU remains resilient and competitive in addressing cybersecurity challenges.