Patchwork Security went through Y Combinator in the Winter 2016 batch and describes itself as: Security patch notifications for servers. As of November 10, 2026, Y Combinator's directory lists it as Inactive (Y Combinator directory entry, November 15, 2015).
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Key facts
- · Batch: Winter 2016 · Patchwork Security in the Y Combinator directory
- · Industry: B2B · Patchwork Security in the Y Combinator directory
- · Team size: 2 · Patchwork Security in the Y Combinator directory
- · Based: San Francisco · Patchwork Security in the Y Combinator directory
- · Status: Inactive, as listed by Y Combinator · Patchwork Security in the Y Combinator directory
Patchwork Security went through Y Combinator in the Winter 2016 batch, describing itself as Security patch notifications for servers. Build it, deploy it, and…. Y Combinator's company directory lists it as Inactive. The directory does not say why a company stopped, and this page does not guess.
- Batch
- Winter 2016
- What they did
- Security patch notifications for servers. Build it, deploy it, and…
- Industry
- B2B
- Team size
- 2
- Based
- San Francisco
- Status
- Inactive, as listed by Y Combinator
Its batch
Winter 2016 had 122 companies in YC's listing: 58 Active, 23 Acquired, 1 Public and 40 Inactive, so Patchwork Security is one of 40 companies from that batch listed as Inactive (33%). Across YC batches at least two years old, 23% of companies are listed Inactive.
Statuses are Y Combinator's own listing in its public company directory, read on the date shown. YC's directory can drop companies altogether, so the Inactive counts here are a floor, not a full count of companies that stopped. Acquired and Public are as YC lists them; neither says anything about the price or the outcome for founders.
The record: Patchwork Security in the Y Combinator directory. Measured 2026-11-10 from Y Combinator's company directory.
YC Winter 2016All shut-down YC companiesYC outcomes
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Example from a real report (our sample on Target): “In March 2026, Target announced a planned incremental $1 billion operating investment” Source: Target Corporation (press release)
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What the Full Report on Patchwork Security covers
The Short Answer
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What They Do, And How The Money Works
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The Money: Funding, Valuation, Runway
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Warning Bells
Sources
1 cited source found
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