A Cye alternative built for the firm that owns the portfolio
Choose the framework, keep the evidence, and run it all inside your own deployment, with a vendor that has no private-equity owners.
Head-to-head
| Dimension | Testify | Cye |
|---|---|---|
| Maturity framework | CIS Controls v8 safeguard level, scored on Policy, Implementation, Automation and Reporting; NIST CSF 2.0 with a NIST-to-CIS crosswalk; a custom-framework authoring wizard to build and score your own top-level framework | Publicly documents “Maturity scoring and benchmarking against NIST CSF 2.0” [1] |
| Deployment | Docker container in your cloud or on-premises; all AI runs locally | Cloud platform (third-party tool listing) [2] |
| Attack paths | Observed external entry → inferred chain through open control gaps → blast radius on your loss model. Observed or inferred, stated on every link | Describes attack-path analysis on its product page [3] |
| Dollars | Projected annual loss on a model customers can inspect; the exposure bridge separates earned from re-estimated | Describes financial exposure quantification on its product page [3] |
| Investors | Cyber Flag has no private-equity investors or owners | $100M+ round (2021) “led by the global investment organization EQT” [4]; EQT describes itself as “#20 globally in private equity, by capital raised” [5] |
What Cye does
Cye is an exposure-management company. Its product page describes attack-path analysis and financial exposure quantification [3].
Where Testify is different
- Your frameworks, including your own. Assess at the CIS Controls v8 safeguard level or natively against NIST CSF 2.0, or build and score your own top-level framework in the custom-framework authoring wizard.
- Questions that get evidence. An AI coach checks answers against the control's requirements, and the local model drafts follow-up questions that ask for evidence rather than a flattering yes.
- Your deployment. Testify runs as a Docker container in your cloud or on-premises, and all AI runs on a local model.
- Evidence the firm owns. Verification campaigns confirm controls operate as designed and leave an exit-ready record in the firm's own environment.
- Observed or inferred, on every link. Only an attack path's entry can be observed; every later step is labeled inferred, and entry and chain confidence are shown separately. External monitoring covers only domains each company has attested, with that company's consent.
- Earned versus re-estimated. The Board's exposure bridge separates risk reduction earned by verified control closes from model re-estimates and portfolio changes.
- No private-equity owners. Cyber Flag has no private-equity investors or owners, so the platform governing your portfolio doesn't answer to a sponsor you compete with for deals.
Frequently asked questions
Is Testify an alternative to Cye for private equity?
Yes. Both serve PE firms that govern cyber risk across portfolio companies. Testify measures maturity at the CIS Controls v8 safeguard level, on NIST CSF 2.0, or on a framework the firm authors, ties attack paths to verified control state, and runs entirely inside the firm's own deployment with local AI. Cye publicly documents maturity scoring against NIST CSF 2.0 and runs as a cloud platform.
Which frameworks does Testify support compared with Cye?
Testify assesses at the CIS Controls v8 safeguard level across Policy, Implementation, Automation and Reporting, assesses natively against NIST CSF 2.0 with a NIST-to-CIS crosswalk, and includes a custom-framework authoring wizard so a firm can build and score its own top-level framework. As of 2026-09-14, Cye's public documentation describes maturity scoring and benchmarking against NIST CSF 2.0.
Is Cyber Flag backed by private equity?
No. Cyber Flag has no private-equity investors or owners. Cye's 2021 funding round was led by EQT, a global private markets firm.
Sources
- Cye: platform information page, accessed 2026-09-14
- CyberSecTools: Cye Hyver listing, accessed 2026-09-14
- Cye: product page, accessed 2026-09-14
- Cye: funding announcement (2021-02-11), accessed 2026-09-14
- EQT: about, accessed 2026-09-14
See it on your portfolio
Testify is accepting early customers. Portfolio Directors and Operating Partners get priority access to a guided walkthrough.