Chief Information Security Officer
Best Fractional CISO Firms
Fractional CISO firms scored on the same public rubric as the rest of the index.
7 firms, ordered by score. Methodology
Search 7 fractional CISO firms for reviews and scores.
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The fractional CISO role
A fractional CISO leads information security part-time, or on a defined scope. This hub scores 7 firms. IOmergent publishes $8,000-$25,000/mo. The other 6 firms leave the monthly rate unpublished.
Top-Scored Fractional CISO Firms
The whole set for this role, scored against the public methodology. A firm's score is the same number used on its profile.
| # | Firm | Best for | Price | Score | Links |
|---|---|---|---|---|---|
| 1 | Growth-stage SaaS, fintech, and healthtech companies that want a fractional CISO who has led security in-house. | $8k-$25k/mo | 68 / 100 | Visit site | |
| 2 | Companies hiring a fractional, interim, or virtual CIO, CTO, or CISO from Fortium Partners, part of ZRG. | Not published | 60 / 100 | Visit site | |
| 3 | Organizations that want a U.S.-based virtual CISO and analyst for interim or part-time security leadership. | Not published | 51 / 100 | Visit site | |
| 4 | The role list covers CTO, CMO, CFO, COO, CPO, CRO, CISO, and CHRO. Homepage schema also names Fractional CIO. | Not published | 47 / 100 | Visit site | |
| 5 | Healthcare and manufacturing organizations that need a virtual CISO, also described as a fractional CISO, with SideChannel's Enclave platform. | Not published | 46 / 100 | Visit site | |
| 6 | Companies that want part-time technology leadership across CFO, CMO, CTO, CRO, and CISO seats, staffed through one Tecla network. | Not published | 44 / 100 | Visit site | |
| 7 | Companies that want virtual CISO leadership and a security program, as in the EditShare example. | Not published | 41 / 100 | Visit site |
Rank here reflects the whole CISO set. See the methodology.
Last verified 2026-10-28. View changelog
- 2026-10-27Initial ranking for this role, ordered by overall score.
- 2026-10-28Added firms verified on their own sites and ordered the page by score.
Recently verified
Every edit to this ranking is dated.
- 2026-10-28CISO rankingAdded firms verified on their own sites and ordered the page by score.
- 2026-10-27CISO rankingInitial ranking for this role, ordered by overall score.
Full Firm Directory
Every firm in this directory, searchable by name.
7 of 7 firms
Organizations that want a U.S.-based virtual CISO and analyst for interim or part-time security leadership.
Companies that want part-time technology leadership across CFO, CMO, CTO, CRO, and CISO seats, staffed through one Tecla network.
Companies hiring a fractional, interim, or virtual CIO, CTO, or CISO from Fortium Partners, part of ZRG.
Companies that want virtual CISO leadership and a security program, as in the EditShare example.
Healthcare and manufacturing organizations that need a virtual CISO, also described as a fractional CISO, with SideChannel's Enclave platform.
IOmergent
Founded 2021
Growth-stage SaaS, fintech, and healthtech companies that want a fractional CISO who has led security in-house.
Go Fractional
Founded 2020
Companies hiring a fractional CTO, CMO, COO, or CRO through one operator marketplace. The same marketplace also lists finance and people seats.