Last reviewed: 7 August 2026. This list is refreshed quarterly; provider details and market facts are re-verified on each pass.
What is a vCISO, and is it the same as a fractional or outsourced CISO?
Yes, in practice they are the same service. A vCISO (virtual Chief Information Security Officer), also sold as a fractional CISO, outsourced CISO or CISO-as-a-Service, is a senior security leader engaged part-time or on retainer to carry out the CISO function, security strategy, risk management, compliance ownership and board reporting, without the cost or commitment of a full-time executive hire.
This is not our gloss; it is how the market itself uses the terms. Providers that rank for these queries say so in their own copy. vciso.com states that “‘fractional CISO’ and ‘virtual CISO’ are used interchangeably across the industry… the work is identical” (tier-1, as of 07-08-2026). UK provider CyPro’s FAQ confirms the terms are “often used interchangeably”, and Ireland’s CommSec folds “CISO as a Service (CaaS), also known as a Virtual CISO (vCISO)” into the same cluster. Where a nuance is drawn, it is usually this (per CyPro’s explainer, published 24-07-2026, tier-1):
- Fractional CISO, an ongoing part-time seat (typically 0.5–3 days per week).
- vCISO / virtual CISO, remote, retainer-based delivery of the same leadership.
- Outsourced CISO, accountability for the function moved to a supplier.
- Interim CISO, short-term cover for a vacant full-time role (a different beast).
Buyers search all five labels for one product, so this guide treats them as one product, and evaluates providers accordingly.
When a software company genuinely needs one, and when it honestly does not
You likely need a vCISO when customers, investors or regulators are asking security questions nobody internally owns: enterprise procurement teams sending due-diligence questionnaires, a first ISO 27001 or SOC 2 programme that needs steering, a board that wants a named accountable person, or an AI product that now attracts AI-governance scrutiny. For a software company between roughly seed and Series C, a fractional seat is usually the proportionate answer to all of the above.
You honestly do not need one (yet) when:
- You have no compliance commitments and a small attack surface. Cyber Essentials, a baseline penetration test and sensible cloud hygiene may be the right spend first.
- You need hands-on engineering, not leadership. If the gap is monitoring, patching and alert response, that is an MSSP/MSP purchase. An MSSP cannot replace a CISO’s judgement, and a CISO should not be your SOC (a distinction buyers raise repeatedly, e.g. “Should I hire a vCISO or an MSSP first?”, as of 07-08-2026).
- You are mid-incident. Retained leadership is not incident response; engage an IR firm first, then consider a vCISO for the rebuild.
- You already have a competent internal security lead. A vCISO duplicating that role adds cost, not assurance.
Adjacent question: if your trigger is GDPR accountability rather than security leadership, an outsourced DPO may be the more precise hire, see Do I need a DPO?.
The trust problem, and how we selected this list
Here is the uncomfortable context, in buyers’ own words. On r/soc2, one founder asks: “some of the vCISOs have 2 years of experience? Who is actually paying for this shit?” Others: “Anyone have any recommendations for a good fractional CISO?”, “Thoughts on hiring a vCISO?”, and, after a breach, “management contracted one of those vCISO companies… are they always this ‘holographic’?”, describing a year of retainer fees with no policy changes (Reddit, tier-3, phrasing only, as of 07-08-2026). The market has a flood of for-hire posts, and buyers cannot easily distinguish real operators from figureheads.
So the only selection criteria that matter are verifiable experience criteria. Before signing, ask:
- Who is the named person? Not the firm, the individual. “Who specifically will be my vCISO?” is the first of the evaluation questions published by efros.com (tier-2, as of 07-08-2026). If the answer is “our bench”, treat that as a warning.
- Years in role. How long has that person actually operated as a CISO or deputy, not in security generally?
- Client load. The same source flags 10+ concurrent clients per vCISO as a red flag; ask the number directly.
- Incident history. Have they led a real incident or audit failure response? What happened?
- Escalation path. Who answers at 2 a.m. during an active incident, and contractually how fast?
- Who shows up. Confirm in writing that the named person, not a junior, attends your audit and your board meeting.
Every entry below was surfaced by our SERP and provider recon (as of 07-08-2026) and is described only with facts we could attribute.
Providers (UK and Ireland focus)
Disclosure. This guide is published by Atoro, which is included in the comparison. We apply the stated criteria consistently, link to supporting evidence and identify claims we could not independently verify.
Atoro
- Where: Ireland (Portarlington, Co. Laois), with a UK entity.
- What they offer: Virtual CISO services, plus ISO 27001, SOC 2 and GDPR work via TrustOps. Atoro is ISO 27001 and ISO 42001 certified itself.
- Pricing: Published at atoro.io/pricing, with the engagement figure fixed after scoping.
Also surfaced: Digital Reference’s UK editorial list (tier-2) names eight boutique providers, Incursion, Boardman, iSoft, Neon Circle, Rougemont, SecQuest, Privacy Helper and 51 Degrees, with founder bios but no pricing or framework matrix (as of 07-08-2026). We could not attribute further verifiable facts to the individual boutiques from our research, so we list them here without individual profiles rather than invent detail. One caution from the recon: micro-packages advertised at £99–£499/month (virtualcisosme.co.uk) look under-scoped against published market norms of £3k–£15k/month, a price point worth probing with the verification questions above before purchase (tier-1 pages, as of 07-08-2026).
- Best for: Scaling software and AI companies with enterprise customers, that want a named senior engineer in their own time zone rather than a rotating bench.
CyPro
- Where: UK.
- What they offer: Virtual/fractional CISO services; publishes definitional explainers separating vCISO, fractional, interim and outsourced models (explainer published 24-07-2026, tier-1).
- Pricing signals: Self-published UK figures, retainers £3k–£15k/month, day rates £1,200–£2,500, and a full-time CISO comparison of £140k–£220k base (tier-1, provider self-published, unverified against contracts, as of 07-08-2026).
- Market footprint: Appears across three of the four main UK search phrases in our recon, the de-facto SEO incumbent for this cluster (as of 07-08-2026).
Starkhorn
- Where: UK.
- What they offer: Virtual CISO services for UK businesses, plus fractional-CISO explainer content (tier-1 provider pages, as of 07-08-2026).
- Pricing signals: None published in the research.
- Market footprint: Ranks top for “virtual CISO services UK” and top-3 for “fractional CISO UK” in our recon (as of 07-08-2026).
RedSecLabs
- Where: UK.
- What they offer: “Virtual CISO (also called vCISO or fractional CISO)” services, with a CREST-accredited penetration-testing-led angle (tier-1 provider page, as of 07-08-2026).
- Pricing signals: None published in the research.
- Market footprint: Top-5 for “virtual CISO services UK” (as of 07-08-2026).
Boardman
- Where: UK.
- What they offer: Fractional CISO service (tier-1 provider page, as of 07-08-2026); also named on Digital Reference’s editorial list of UK fractional/outsourced CISO agencies (tier-2).
- Pricing signals: None published in the research.
- Market footprint: Top-5 for “fractional CISO UK” (as of 07-08-2026).
CommSec
- Where: Ireland.
- What they offer: “CISO as a Service (CaaS), also known as a Virtual CISO (vCISO)” (tier-1 provider page, as of 07-08-2026).
- Pricing signals: None published in the research.
- Market footprint: One of the few Ireland-based providers surfaced; no Irish comparison listicle exists as of 07-08-2026.
Safe Harbour Security
- Where: Ireland and UK.
- What they offer: “Virtual Security Manager”/vCISO service (tier-1 provider page, as of 07-08-2026).
- Pricing signals: None published in the research.
- Market footprint: Surfaced in Ireland-specific searches in our recon (as of 07-08-2026).
Rjk.info
- Where: Dublin, Ireland.
- What they offer: Fractional CISO services, location-targeted at Dublin (tier-1 provider page, as of 07-08-2026).
- Pricing signals: None published in the research.
- Market footprint: Surfaced in Ireland-specific searches (as of 07-08-2026).
FAQs
Is a fractional CISO the same as a vCISO?
In practice, yes. Providers state the terms are used interchangeably across the industry; “fractional” emphasises the part-time commitment, “virtual” the remote delivery model. The work is the same.
How much does a vCISO cost in the UK?
Provider-published figures put UK retainers at £3,000–£15,000 per month and day rates at £1,200–£2,500 (CyPro, self-published, unverified against contracts, as of 07-08-2026). Fractional-quest quotes hourly rates of £160–£333 (tier-2). Treat any quote far below these ranges as a scoping red flag.
Is a vCISO cheaper than hiring a full-time CISO?
On UK figures, yes: a full-time CISO base salary is quoted at £140,000–£220,000 before on-costs (CyPro, self-published, as of 07-08-2026), against £36,000–£180,000 a year in vCISO retainer fees at the published range.
When does a software company need a vCISO?
Security accountability has no internal owner and external pressure is mounting, enterprise due-diligence questionnaires, a first ISO 27001 or SOC 2 programme, board-level reporting, or AI governance obligations.
When should you not hire a vCISO?
When you need hands-on monitoring and response (buy an MSSP), when you are mid-incident (buy incident response), or when your only real need is a baseline such as Cyber Essentials and a penetration test.
How do I verify a vCISO’s experience before signing?
Ask for the named individual, their years operating as a CISO, their concurrent client count (10+ is a published red flag), their incident history, and written confirmation that they personally attend your audits and board meetings.
Can an MSSP replace a CISO?
No. An MSSP delivers monitoring and operational response; a CISO provides leadership, risk judgement and accountability. The two are complements, and some organisations need both.
Is the vCISO model actually legitimate?
It is legitimate when scoped honestly: a named, experienced individual, a capped client load, a defined escalation path and concrete deliverables. The scepticism found in buyer forums, paying retainer money for a “holographic” figurehead, describes badly scoped engagements, not the model itself.