Proofpoint Expands Compliance Capabilities with Nuclei Acquisition

In a single week, Proofpoint has announced two significant acquisitions, signaling a strategic expansion of its cybersecurity and compliance offerings. Last week, Proofpoint acquired Hornetsecurity, a European vendor that specializes in protecting smaller businesses running Microsoft 365 and doing so with the help of MSPs.

Today, Proofpoint has acquired Nuclei, a technology provider focused on compliance archiving and AI-powered data enrichment, to bolster its digital communications governance capabilities. The acquisition comes at a time when organizations are increasingly relying on collaboration platforms like Microsoft Teams, Slack, Zoom, and WhatsApp—creating new challenges for security, compliance, and information governance teams.

With Nuclei’s platform, Proofpoint gains the ability to capture and archive data across more than 100 collaboration tools. This includes not just messages and attachments, but also metadata, transcriptions, and translated content. The integration enhances Proofpoint’s ability to address regulatory and legal obligations while helping customers unlock operational insights from real-time conversations.

Data Enrichment Meets Scalable Compliance

Nuclei brings robust AI features that enable real-time speech recognition in over 120 languages, automatic translation, and video analysis. These capabilities can turn unstructured communications into structured datasets, helping teams surface behavioral patterns, identify potential risks, and streamline business processes.

The platform is also built for scalability, using a serverless architecture that aligns with Amazon Web Services best practices. It supports end-to-end encryption and has undergone third-party security audits to validate its approach. These foundations make it well-suited for large enterprises and regulated industries seeking dependable and secure compliance workflows.

Support for Existing Infrastructure

A key benefit for existing Proofpoint customers is Nuclei’s broad compatibility with major archive and governance systems, including Smarsh, Global Relay, Arctera, and Microsoft Purview. This means organizations can integrate new capture capabilities without overhauling their compliance infrastructure.

By bringing Nuclei into its portfolio, Proofpoint is positioning itself to help enterprises manage the complexity of modern communications, especially as regulatory scrutiny intensifies. The move also reflects a growing need to derive strategic value from conversational data—going beyond basic archiving to extract insight, ensure compliance, and support automation.