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Silver Tail Systems funding, valuation and investors
Real-time web fraud detection using session behavioral analytics.
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Funding, valuation & investors
Answer-first snapshotLatest funding
Series B
~$20M · June 2011
Latest known valuation
Not publicly disclosed
Total disclosed equity funding
Not publicly disclosed
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
acquired
acquired · San Mateo, California
Latest tracked event: Acquisition (October 2012). It is shown separately because it is not counted as disclosed equity funding.
Overview
Silver Tail Systems analyzed user session behavior on websites to detect fraud, account takeover, and malicious activity in real time. The San Mateo company served financial services and ecommerce customers with behavioral analytics before rules-based fraud tools dominated. Andreessen Horowitz led approximately $20M Series B in 2011; In-Q-Tel participated. EMC acquired Silver Tail in October 2012 for integration into the RSA security division.
Why Silver Tail Systems is interesting
Enterprise fraud analytics a16z led before EMC/RSA acquisition — In-Q-Tel also in syndicate.
Product & use cases
Silver Tail's platform monitored web session behavior — mouse movements, navigation patterns, typing cadence — to flag fraud and automated bot activity in real time.
- Online banking fraud detection
- Ecommerce account takeover prevention
- Bot and credential-stuffing detection
- Real-time session risk scoring
Key facts
- Acquired by EMC/RSA (Oct 2012) — TechCrunch
- Series B (Jun 2011): ~$20M led by a16z — FinSMEs
- In-Q-Tel investor — SecurityWeek
- Real-time behavioral web fraud analytics
Funding history (newest first)
Acquisition
2012-10- EMC (lead)
Source: https://techcrunch.com/2012/10/04/emc-acquires-silver-tail-systems/
Series B
2011-06 ~$20MSource: https://www.finsmes.com/2011/06/silver-tail-systems-raises-20m-series-b.html
Investors in our directory
Funds linked from Silver Tail Systems's profile — open a fund page for stage focus and related deal articles.
Competitive landscape
Edge: Behavioral session analytics ahead of mainstream machine-learning fraud stacks in early 2010s.
Behavioral fraud analytics became table stakes — Silver Tail's EMC exit predates modern ML fraud API vendors like Sardine and Socure.
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RSA (EMC) incumbent
Acquirer; integrated Silver Tail into RSA fraud portfolio.
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iovation (TransUnion) direct
Device and behavioral fraud intelligence competitor.
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Rules-based WAF/fraud tools incumbent
Legacy approaches Silver Tail improved upon with behavior models.
Notable stories
- Silver Tail pioneered session behavior fraud detection before modern device fingerprinting vendors scaled — a16z bet on analytics over static rules.
- EMC/RSA acquisition folded Silver Tail into enterprise security suites sold to Fortune 500 banks.
Industries
Related funding articles
Venture Capital Tracker pieces that cover Silver Tail Systems's financing or category context.
FAQs about Silver Tail Systems
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