Security ratings vs. inside-out maturity
BitSight and SecurityScorecard are useful for fast, day-zero diligence. They cannot see what a maturity measurement can.
What outside-in ratings see — and don't
Ratings (numeric for BitSight, letter-grade for SecurityScorecard) are derived from externally observable signals and are widely used in third-party risk and fast PE diligence snapshots. They are good for a quick external read. But they cannot see internal policy depth, process, or implementation — the things that determine whether a control actually works.
What inside-out maturity exposes
Testify's four-dimension safeguard model exposes exactly what ratings cannot: policy depth, implementation, automation, and reporting, at the CIS Controls v8 level. That is the difference between "looks fine from the outside" and "the control is enforced and we can prove it."
Corroborate, don't substitute
As of v2.2.0 Testify aggregates third-party ratings (BitSight, SecurityScorecard, Black Kite) into its portfolio view, so the outside-in signal corroborates the inside-out evidence rather than standing in for it. Attack-surface / OSINT monitoring adds the external exposure picture — credential leaks, certificate issues, exposed services — correlated across the portfolio.
Frequently asked questions
Are security ratings enough for PE cyber diligence?
They are a useful day-zero snapshot, but not sufficient on their own. A company can rate well externally and still lack basic internal controls. For governance over a hold period, a firm needs inside-out maturity measurement, which ratings cannot provide.
Does Testify use BitSight or SecurityScorecard data?
Yes. As of v2.2.0 Testify aggregates third-party ratings (BitSight, SecurityScorecard, Black Kite) as one input to its portfolio view, corroborating its inside-out evidence rather than replacing it.
What can Testify see that a ratings service can't?
Internal policy depth, implementation, automation, and reporting at the safeguard level — plus the incident-to-control linkage that treats a breach as a systemic control failure. Ratings only observe external signals.
See it on your portfolio
Testify is accepting early customers. Portfolio Directors and Operating Partners get priority access to a guided walkthrough.