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Sift (YC S11) — The leader in digital trust & safety

Sift is the leader in Digital Trust & Safety, empowering digital disruptors to Fortune 500 companies to unlock new revenue without risk. Sift dynamically prevents fraud and abuse through industry-leading technology and expertise, an unrivaled global data network of 70 billion events per month, and a commitment to long-term customer partnerships.

Sift is a Y Combinator company in the Summer 2011 batch. Its directory entry describes it as: The Leader in Digital Trust & Safety. The founder listed is Jason Tan (Founder/CEO) (Y Combinator directory entry, January 17, 2012).

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Sift

New accelerator entry · 2012-01-17 · the record

Summer 2011
batch
—
people
Growth
stage
United States of America
region
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What the record says

BatchSummer 2011
Announced2012-01-17
StageGrowth
StatusActive
IndustryB2B
Sub-industryB2B -> Security
SectorsFintech, Machine Learning, SaaS, B2B
RegionsUnited States of America, America / Canada, Remote, Partly Remote
BasedSan Francisco, CA, USA
HiringYes
Sitehttps://sift.com/
Previously known asSift Science, Sift, Sift Science

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Also in YC Summer 2011

Same batch, B2B first.

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In their words

Sift is the leader in Digital Trust & Safety, empowering digital disruptors to Fortune 500 companies to unlock new revenue without risk. Sift dynamically prevents fraud and abuse through industry-leading technology and expertise, an unrivaled global data network of 70 billion events per month, and a commitment to long-term customer partnerships. Global brands such as DoorDash, Twitter, and Wayfair rely on Sift to gain a competitive advantage in their markets.

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What the Full Report on Sift covers

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  2. Which Company This Is

  3. What They Do, And How The Money Works

  4. Who Runs It, And How To Reach Them

  5. The Money: Funding, Valuation, Runway

  6. Who Pays Them, And Who They Are Up Against

  7. Warning Bells

  8. Sources

    1 cited source found

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Sift: Accepted into Y Combinator Summer 2011
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Permanent URL: https://mentionfox.com/funding/yc-sift
Last updated 2026-10-20
Primary record: Y Combinator directory entry
Sift (YC S11) — The leader in digital trust & safety. MentionFox, 2026-10-20. https://mentionfox.com/funding/yc-sift