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Q2 2026 · Series A / Series B · Cybersecurity
3 cybersecurity startups at series a / series b stage ranked by GitHub engineering acceleration in Q2 2026. greenbone leads with 76 commits over 14 days (+130%). Growth-stage technical startups that have closed institutional rounds. Engineering signals at this stage are less about discovery and more about validation of trajectory.
Cybersecurity sector data last verified:
Investor insight
At Series A/B, engineering acceleration is a trajectory signal rather than a discovery signal. A hiring burst or platform buildout often precedes the next round. Institutional investors use these signals to prioritize outreach and refine conviction before a lead term sheet.
| # | Company | Stage | Geo | Commits (14d) | Change | Contributors | Contrib. Growth | New Repos | Signal |
|---|---|---|---|---|---|---|---|---|---|
| 1 | greenbone Open Source Vulnerability Management View signal profile → | Series A/B | EU | 76 | +130% | 46 | +9% | 1 | Framework migration |
| 2 | tenzir Open source data pipelines for security teams View signal profile → | Series A/B | EU | 166 | -7% | 47 | +0% | 0 | Framework migration |
| 3 | yaklangView signal profile → | Series A/B | Unknown | 71 | -52% | 34 | +0% | 3 | Infrastructure buildout |
Sorted by commit velocity change (14-day window). Stage from contributor count + enrichment. Last updated Q2 2026.
The free Acceleration Watch: five venture-backed teams accelerating on the engineering signal, translated into plain English — 21 to 47 days before the deck circulates. No code-reading, no card.
greenbone leads cybersecurity series a / series b-stage startups in Q2 2026 with 76 commits over a rolling 14-day window (+130% change) and 46 active contributors. Across all 3 cybersecurity startups at this stage, the average 14-day commit velocity is 104 commits.
At Series A/B, engineering acceleration is a trajectory signal rather than a discovery signal. A hiring burst or platform buildout often precedes the next round. Institutional investors use these signals to prioritize outreach and refine conviction before a lead term sheet.
Stage is derived from contributor count, team-size enrichment, and funding history where publicly available. Stage buckets (Pre-Seed, Seed, Series A/B, Growth) use broad matching for sample size. Always verify independently before any investment action.