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Silver Tail Systems

Cybersecurity · Menlo Park, United States · Founded 2008

Silver Tail Systems employs web session intelligence and real-time behavioral analytics to detect and prevent fraud and abuse on websites MoreLess

Silver Tail Systems, founded in 2008 by Laura Mather and Mike Eynon, established itself as a provider of web session intelligence and behavioral analytics to counteract online fraud. The founders' journey originated from their shared experience on the anti-fraud team at eBay and PayPal. Frustrated by constantly reacting to criminals, Mather, who served as Director of Fraud Prevention at eBay, identified the need for a new set of tools to proactively combat sophisticated online attacks. This direct exposure to the evolving tactics of cybercriminals was the catalyst for creating Silver Tail Systems. The company secured strategic investments from notable backers including Andreessen Horowitz, Citi Ventures, and In-Q-Tel, the venture capital arm of the CIA.

The firm's core business centered on providing real-time predictive analytics to protect large-scale websites from cybercrime and fraud. It served prominent clients in the financial services, e-commerce, and government sectors, including brands like Microsoft, Bank of America, and Apple. The business model was subscription-based, offering its products either as on-premise installations or as a SaaS solution. Silver Tail’s technology addressed a critical gap in the market by focusing on the 'navigation layer' of web security, analyzing entire user sessions rather than just individual transactions. This big-data-driven approach allowed it to model normal user behavior and detect anomalies that indicated malicious activity such as insider threats, business logic abuse, and account takeovers. Its products could analyze hundreds of thousands of clicks per second to provide a real-time risk score for every web session.

The company's primary offering was its Forensics platform, which used behavioral analytics to create models of normal website traffic and identify suspicious behavior. A key feature, the Web Session Intelligence technology, provided deep visibility into both web and mobile traffic, allowing clients to distinguish between legitimate customers and attackers. This system was designed for rapid deployment, enabling clients to see value within days. In October 2012, Silver Tail Systems announced it had signed a definitive agreement to be acquired by EMC, to be integrated into its security division, RSA. The acquisition, completed in December 2012, was intended to merge Silver Tail's behavioral analytics capabilities with RSA's existing identity protection and verification solutions.

Keywords: behavioral analytics, web session intelligence, fraud detection, cybercrime prevention, real-time analytics, user behavior analysis, business logic abuse, anti-fraud, navigation layer security, online banking security, ecommerce security, threat detection, clickstream analysis, risk-based authentication, big data security, man-in-the-browser detection, RSA Web Threat Detection, identity protection, predictive analytics, insider threat detection

Company overview

Silver Tail Systems company information

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

Status
Acquired
Founded
2008
Headquarters
Menlo Park, United States
Employees
3
Open positions
None listed
Dealroom signal
56.3
client focusb2btechnologyBig DatatechnologyDeep Techsub industryIdentity & AccessindustrySecuritysectorAnalyticssectorPredictive AnalyticssectorUser BehaviorsectorFraud Detection and PreventionsectorHard TechsectorDT and LS

Valuation & funding

Silver Tail Systems funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITIONExit Oct 2012 $250M $250M EMC
SEEDEquity / VC Sep 2011 Undisclosed
SERIES BEquity / VC Jun 2011 $20M $80M Knoll Ventures · Startup Capital Ventures · Andreessen Horowitz · Leapfrog Ventures
SERIES AEquity / VC Sep 2008 $2.1M $8.4M Startup Capital Ventures · Knoll Ventures · Seraph Group · Leapfrog Ventures
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Financials

Workforce over time

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

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

Silver Tail Systems website traffic

Latest recorded traffic for Silver Tail Systems is 0 monthly website visits. Silver Tail Systems's team grew 0% over the past year.

Latest monthly visits0 1-year team growth0%
Monthly website visits31 observations · Oct 2017–May 2020
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Comparisons

Silver Tail Systems compared with similar companies

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Talent graph

Silver Tail Systems's talent

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Team profiled 21 named & role-tagged
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Key operators Hidden — book a demo quality score
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Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

9 investors on Silver Tail Systems'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
Startup Capital Ventures
Knoll Ventures
Seraph Group
Leapfrog Ventures
Andreessen Horowitz
Other known 4 additional known investors
EMC
Bee Cave Capital
Citi Ventures
In-Q-Tel

Global footprint

Where Silver Tail Systems has talent and traffic

Workforce by country
1 countries with
team presence
🇬🇧 United Kingdom100%
1 country shown

In the news

Latest news about Silver Tail Systems

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Market sentiment

What the market is saying about Silver Tail Systems

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

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