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Marble Security

Defence · Sunnyvale, United States · Founded 2005

App Threat Intelligence and Defense | Marble Security MoreLess

Marble Security, founded by serial entrepreneur Dave Jevans in 2005, established itself as a provider of mobile threat intelligence and defense before its acquisition by Proofpoint in August 2015. Jevans, a cybersecurity veteran with over 20 years of experience and 17 US patents, previously founded and sold other security startups like IronKey and Receipt.com, bringing a wealth of industry knowledge to Marble's operations. The company, which also went by the name Ironkey, secured $34.6 million in funding over two rounds from investors including Bridgescale, Mohr Davidow Ventures, and Crosslink Capital.

The firm specialized in protecting enterprises from mobile security risks originating from malicious and privacy-leaking applications on both Android and iOS devices. It targeted enterprise clients navigating the security complexities of Bring-Your-Own-Device (BYOD) and corporate-owned, personally-enabled (COPE) environments. The business model centered on providing threat intelligence as a service, identifying risks like data leakage, credential theft, and advanced persistent threats (APTs) that often begin with seemingly harmless apps, termed 'riskware'. This service was designed to integrate directly with mobile device management (MDM) and enterprise mobility management (EMM) solutions, offering a layer of security to manage mobile app risks.

Marble Security's core product was a mobile security platform, which included the AppHawk service. This platform was powered by Marble Labs, a dedicated research and response team that analyzed millions of applications to score them against over a thousand potentially malicious behaviors. The service provided an administrative console with a dashboard view of app risk across the enterprise, allowing IT administrators to set risk thresholds, create blacklists and whitelists, and receive alerts. If a risky app was detected, the system could automatically quarantine the device or deny it access to corporate resources until the threat was remediated. Following its acquisition, Marble Security's technology and its team of nearly 20 employees were integrated into Proofpoint, and its offering was rebranded as Proofpoint TAP Mobile Defense.

Keywords: Marble Security, mobile threat defense, enterprise mobility security, BYOD security, app security, riskware, mobile threat intelligence, Dave Jevans, Proofpoint acquisition, AppHawk, mobile device management, enterprise mobility management, iOS security, Android security, data leakage prevention, mobile application analysis, cybersecurity, network management software, cloud security, policy management

Company overview

Marble Security company information

The essential company record, classifications and operating signals in one place.

Status
Acquired
Founded
2005
Headquarters
Sunnyvale, United States
Employees
5
Open positions
None listed
Dealroom signal
58.1
client focusb2bsub industryDevice security & AntivirussectorDefenceindustrySecuritysectorCybersecuritysectorDual-Use Tech

Valuation & funding

Marble Security funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITIONExit Oct 2011 $0 Glassbridge Enterprises
SERIES BEquity / VC May 2010 $22M $88M Bridgescale Partners · Crosslink Capital · Mohr Davidow Ventures
EARLY VCEquity / VC Feb 2009 $13M $50M Undisclosed
EARLY VCEquity / VC Jan 2007 $2.6M $10M Western Technology Investment
EARLY VCEquity / VC Jan 2006 $6M $24M Leapfrog Ventures
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Financials

Workforce over time

Available workforce history. Financial fields without reported data are omitted.

YearEmployees
2026 5
2025 5
2024 5
2023 4
2022 4
2021 4
2020 3
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Growth signals

Marble Security website traffic

Latest recorded traffic for Marble Security is 0 monthly website visits. Marble Security's team grew 0% over the past year.

Latest monthly visits0 1-year team growth0%
Monthly website visits35 observations · Apr 2016–Sep 2020
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Comparisons

Marble Security compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

CompanyHeadquartersStatusEmployeesTotal fundingValuation
Pacem (ex Cassembly)Cassembly Cyberdéfense devient Pacem 🇫🇷. Smartphones sécurisés et solutions de protection des terminaux et des communications Paris, France Operational 9
Source DefenseUses a first-of-its-kind, real-time sandbox isolation technology to provide a unique client-side website security solution focused on preventing malicious activity originating from website supply chain vendors Beersheba, Israel Operational
BarklyExtended endpoint protection helps thwart multiple attack techniques that try to compromise Windows and Mac client endpoints, gain access to resources, and detonate payloads Boston, United States Operational
ThreatTrack SecurityAdvanced Persistent Threat and Malware Defense for Business - ThreatTrack Security Clearwater, United States Operational
KaymeraA data-driven secure mobility company providing SaaS and on-premise mobile security solutions for enterprises and individuals worldwide Herzliya, Israel Operational
ZimperiumZimperium provides enterprise mobile threat defense Dallas, United States Acquired
TopSpin SecurityHelps security teams proactively detect, deceive, and neutralize adversaries inside network before they can do damage to the organization Herzliya, Israel Acquired
icebrg.ioicebrg - Next Generation Defense Seattle, United States Acquired
Showing 8 of the closest matchesCompare every metric →

Talent graph

Marble Security's talent

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Team profiled 6 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators Hidden — book a demo quality score
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

6 investors on Marble Security's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Series A 5 investors entered at this stage
Leapfrog Ventures
Western Technology Investment
Bridgescale Partners
Crosslink Capital
Mohr Davidow Ventures
Other known 1 additional known investor
Glassbridge Enterprises

Global footprint

Where Marble Security has talent and traffic

Workforce by country
1 countries with
team presence
🇺🇸 United States100%
1 country shown

In the news

Latest news about Marble Security

Recent press, funding announcements, and product moves mentioning Marble Security — open to read from the original sources.

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Market sentiment

What the market is saying about Marble Security

An AI-synthesized read of the highest-engagement posts about Marble Security on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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