Netcore Cloud Data Exposure of 40 Billion Unencrypted Mail Logs
A massive data exposure incident occurred involving Netcore Cloud, an Indian-based global email marketing and automation company, when a misconfigured server left over 40 billion records and 13.4 terabytes of data publicly accessible. The exposed database contained unencrypted mail logs, which included sensitive information such as email addresses, message subjects, internal delivery details, and technical data like IP addresses and SMTP configurations. Among the leaked records were healthcare notifications, banking activity alerts, and employment-related emails, some of which were marked as confidential. The data was accessible to anyone who knew the server’s IP address, posing a significant risk of unauthorized access and potential misuse. The breach affected Netcore Cloud’s global client base, which spans more than 6,500 brands across 40 countries and includes organizations in sectors such as ecommerce, finance, media, and travel. The exposure was discovered by cybersecurity researcher Jeremiah Fowler, who reported the issue after finding the database unprotected and unencrypted. Upon notification, Netcore Cloud responded promptly by securing the database and restricting public access on the same day. The company also requested additional information from the researcher to support its internal investigation. The incident highlights the risks associated with misconfigured cloud infrastructure, especially for companies handling large volumes of sensitive communication data. The scale of the exposure, both in terms of record count and data volume, makes it one of the more significant data leaks in recent times. The presence of confidential and technical information in the logs could facilitate further attacks, such as phishing or account compromise, if accessed by malicious actors. The incident underscores the importance of robust security controls, regular audits, and prompt response protocols for organizations managing critical customer data. Netcore Cloud’s swift action in securing the database likely mitigated further risk, but the exposure period remains unclear. The breach has raised concerns about data privacy and the security practices of third-party service providers in the email marketing industry. Organizations using Netcore Cloud’s services may need to assess their own exposure and consider additional safeguards. The event serves as a cautionary tale for all companies relying on cloud-based infrastructure to ensure proper configuration and continuous monitoring to prevent similar incidents.

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How this story unfolded
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NetcoreCloud database exposed 40+ billion unencrypted mail log records
A misconfigured and unsecured NetcoreCloud server exposed roughly 13.4 TB of data containing more than 40 billion records, including unencrypted mail logs. The exposure was publicly reported across multiple outlets as a major data leak affecting NetcoreCloud-hosted information.
Sources
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Massive Exposure: 40 Billion Records (13 TB) of Unencrypted Mail Logs Leaked by Netcore Cloud
securityonline.info
Open sourceMore than 40B records leaked by unsecured NetcoreCloud database
scworld.com
Open sourceMisconfigured NetcoreCloud Server Exposed 40B Records in 13.4TB of Data
hackread.com
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