Proofpoint is a cybersecurity company focused on protecting people and data. Its portfolio covers email protection, offered via API or gateway, account takeover protection, data loss prevention, insider threat management and tools for securing the use of AI. Proofpoint sells directly and through channel, managed service provider and OEM partners.
Proofpoint, Inc. is headquartered in Sunnyvale, California, and has been owned by the US private equity firm Thoma Bravo since 2021. In December 2025 it completed the acquisition of the German company Hornetsecurity, which had acquired Vade in 2024. The software is proprietary. Proofpoint states that it is certified under the EU-US Data Privacy Framework. Public documentation does not state in which region customer data is hosted per product. As a US-owned company, Proofpoint falls under US law such as the CLOUD Act, so hosting location and access should be agreed in the contract.