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Shadow Networks
Privately-held company led by an experienced management team comprising former
About Shadow Networks
Shadow Networks, Inc. operated as a provider of advanced threat detection services, focusing on the enterprise and government sectors. Founded in 2010 by Eric Winsborrow, the company was initially known as Zanttz. Winsborrow, who served as CEO, has an extensive background in the high-technology sector, with executive roles at major security and networking companies including McAfee, Symantec, and Cisco. This experience shaped the company's approach to cybersecurity, which was centered on combating threats that had already infiltrated a network's perimeter.
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The company's core business was providing active threat deception solutions. Its technology was built upon patented virtualization and software-defined networking (SDN) principles to create "shadow networks." These were essentially decoy systems designed to look and behave like real components of a client's network. The purpose was to lure attackers who had already bypassed traditional defenses, allowing Shadow Networks to observe, record, and analyze their methods without putting the client's actual assets at risk. This approach assumed that sophisticated attackers were already inside the network and focused on deception and disruption as the primary mitigation strategy. The business model targeted demanding and security-sensitive organizations, including entities like the US Department of Homeland Security and the Office of the Secretary of Defense.
Over its history, the company secured approximately $16.2 million in funding over several rounds, including a significant Series A round in March 2015 that raised $13.6M. Key investors included Rho Canada Partners, Paladin Capital Group, and angel groups like Alliance of Angels and Keiretsu Forum. In February 2016, Shadow Networks was acquired by Acalvio, a competitor in the threat deception space, marking its exit as a venture-backed entity.
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Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| ACQUISITION✓Exit | Feb 2016 | $0 | — | Acalvio Technologies | — |
| DEBT✓Debt | Aug 2015 | $1.4M | — | Undisclosed | — |
Growth signals
Latest recorded traffic for Shadow Networks is 0 monthly website visits. Shadow Networks's team grew 0% over the past year.
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Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Series A3 investors entered at this stage
Yaletown Partners
Rho Canada Ventures
Paladin Capital Group
Series B and later2 investors entered at this stage
David Arnsdorf
Alliance of Angels
Other known investors1 additional known investor
Acalvio Technologies
Source: Dealroom Talent Intelligence.
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