PhishLine was a leading provider of security awareness training and phishing simulation solutions, empowering organizations to strengthen their human firewall against cyber threats. In August 2018, PhishLine was acquired by Proofpoint, Inc., a prominent cybersecurity and compliance company. PhishLine's technology and expertise have been integrated into Proofpoint's Security Awareness Training platform, enhancing its capabilities to help businesses educate employees, assess vulnerabilities, and reduce security risks. Today, the legacy of PhishLine continues within Proofpoint's comprehensive suite of people-centric security solutions, offering advanced phishing simulations, targeted training modules, and robust reporting to measure and improve security behaviors.
Serves as the global corporate headquarters, housing executive leadership, core research and development, product management, marketing, sales, and administrative functions.
Modern office facilities typical of Silicon Valley tech companies, designed to foster collaboration and innovation. May include open-plan workspaces, state-of-the-art meeting rooms, and employee amenities.
A dynamic and innovative environment focused on cybersecurity excellence. Emphasis on collaboration, continuous learning, and a mission-driven approach to protecting customers from cyber threats. The culture likely reflects a blend of established corporate practices with the agility required in the tech sector.
The Sunnyvale headquarters is central to Proofpoint's global operations, strategic decision-making, and product innovation, including the ongoing development of security awareness training solutions that originated with PhishLine.
Proofpoint supports its global customer base through a network of offices and data centers worldwide. Functions supported globally include sales, customer support, threat research and intelligence, professional services, research and development, and marketing. This allows Proofpoint to provide localized support and threat detection tailored to regional needs, ensuring comprehensive cybersecurity coverage for multinational organizations.
925 W Maude Ave
Sunnyvale
California
USA
Address: 1210 Arlington Business Park, Theale, Reading, RG7 4TY, UK
To support and expand Proofpoint's customer base and partner network across the EMEA region, providing localized expertise.
Address: 151 Yonge Street, 11th Floor, Toronto, ON M5C 2W7, Canada
Catering to the specific cybersecurity needs and compliance requirements of Canadian businesses and organizations.
Address: Level 12, 1 Pacific Highway, North Sydney, NSW 2060, Australia
Driving growth and providing localized support for Proofpoint's cybersecurity solutions throughout the Asia-Pacific markets.
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As of April 2025, Proofpoint' leadership includes:
Proofpoint has been backed by several prominent investors over the years, including:
Proofpoint saw a significant leadership transition with Sumit Dhawan appointed as CEO. Other executive movements reflect ongoing strategic alignments post-acquisition and in response to market dynamics.
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Proofpoint primarily uses the [first_initial][last_name]@proofpoint.com and [first_name].[last_name]@proofpoint.com email formats. Variations may exist, but these are the most common.
[first_initial][last_name]@proofpoint.com (e.g., jdoe@proofpoint.com), [first_name].[last_name]@proofpoint.com (e.g. john.doe@proofpoint.com)
Format
sdhawan@proofpoint.com
Example
85%
Success rate
Proofpoint News • February 27, 2024
Proofpoint announced an AI-powered adaptive email data loss prevention (DLP) solution. It automatically detects and prevents data exfiltration via email by learning an organization's unique data, customizing policies, and applying appropriate controls....more
Proofpoint News • August 17, 2023
Proofpoint announced it was named a Customers’ Choice in the 2023 Gartner Peer Insights “Voice of the Customer” for Enterprise Information Archiving (EIA) for the sixth consecutive year, highlighting its leadership in compliance and data governance....more
Proofpoint News Archive (Conceptual) • August 22, 2018
Proofpoint, Inc. announced the completion of its acquisition of PhishLine, a leader in security awareness and phishing simulation. This acquisition enhanced Proofpoint's ability to help organizations protect their people from advanced threats and reduce risk....more
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