Probo vs Hiring a Fractional CISO

Your board meeting ran long. Your lead investor pulled you aside afterward: "You need a security leader. Enterprise deals are going to stall without one. I know a great fractional CISO - $8k a month, starts next Monday."

You do the math on the walk back. $96k a year. Then you think about the SOC 2 platform you were going to buy for $15k. Then the auditor. Then the hours your engineers are going to burn on evidence. You're looking at $150k and ~200 engineering hours to get to a Type II report and an enterprise-ready posture.

You haven't hired anyone yet and you're already out six figures.

This article isn't a comparison between two compliance tools. It's a comparison between a budget line and an outcome. Here's how to think about it.

Before comparing, let's be precise about what you're buying when you hire a fractional CISO (vCISO, part-time CSO - same role, different labels).

A fractional CISO typically provides:

• • Strategic security leadership - 1-on-1 with CEO, board-facing reporting, executive security narrative
• • Program design - roadmap, framework selection, risk management strategy
• • Vendor and tool selection - "you should use Vanta/Drata/Secureframe, here's why"
• • Policy review and approval - not usually writing, but reviewing
• • Incident response leadership - on-call for real incidents, tabletop facilitation
• • Enterprise buyer-facing presence - attends security reviews, speaks to prospects' security teams
• • Recruiting your eventual full-time security hire

What a fractional CISO typically doesn't do:

• • Write your SOC 2 policies in full detail
• • Upload evidence to your compliance platform
• • Coordinate with your auditor on scheduling, walkthroughs, and evidence Q&A
• • Answer vendor security questionnaires
• • Remediate failed controls hands-on
• • Run your Trust Center

Their value is leadership, strategy, and presence. Execution is not their job - and at $8k/month for 10-20 hours, there isn't capacity for it anyway.

Probo is not a leadership role. Probo is a compliance execution team. What we cover:

• • Framework scoping and mapping - SOC 2, ISO 27001, HIPAA, GDPR, NIS2, etc.
• • Policy drafting - custom to your stack, ~12-18 policies written for you
• • Evidence collection - integrations + our team chasing what integrations miss
• • Auditor selection, coordination, and management - we run the audit
• • Remediation - failed controls get proposed fixes; we implement where possible
• • Questionnaire response - 24-48 hour turnaround
• • Trust Center hosting - compliance reports, sub-processor list, DPA
• • Framework renewal - Type II, ISO surveillance, HIPAA risk analysis updates

What Probo doesn't do:

• • Be your board-facing security executive
• • Lead live incident response (we coordinate, but you or your team owns the technical response)
• • Pitch prospects as "our CISO"
• • Own the long-term security roadmap for your company

Here's where most founders miscategorize the decision. A fractional CISO and Probo solve different problems.

• • A fractional CISO solves leadership and narrative.
• • Probo solves compliance execution.

If you hire only a fractional CISO, you still need someone to do the work - an internal compliance owner, a security engineer, or a platform + internal hours. The CISO's strategy is only as valuable as your execution.

If you use only Probo, you still need someone to be the face of security to the board and to large enterprise buyers who want to talk to "your CISO." Most Probo customers under 60 people fill that role with the founder or head of engineering, supported by our artifacts. Above 60-80 people, a part-time or full-time security leader usually enters the picture.

The right question isn't "Probo vs fractional CISO." It's: "Which one do I need first, and when do I add the other?"

The mistake: hiring a fractional CISO first, before you have a compliance program.

Here's what happens. Month 1: CISO does an assessment. Month 2: CISO recommends a platform. Month 3: You buy the platform. Months 3-8: The CISO guides, the platform tracks, and you and your engineers do the work . You're paying $8k/month for guidance on a program you're executing yourself.

The correct sequencing for most startups under 60 people:

1. 1. Probo first - get SOC 2 Type I in 8-12 weeks, Type II at month 12. Your compliance posture is handled.
2. 2. Fractional CISO second (if needed) - add at year 2 when enterprise buyers start asking "who's your CISO?" or when you need board-level security narrative. By now, compliance execution is stable, so the CISO's hours go to strategy, not setup.
3. 3. Full-time CISO eventually - usually at 80-150 people, when security becomes a core function.

The exception: if you're in a high-regulation vertical (defense, fintech, health systems) and you need a CISO presence in sales cycles from day one, hire the CISO first and use Probo underneath them for execution. They'll thank you for it.

Simplified for a 30-person SaaS targeting SOC 2 Type II:

Option A: Fractional CISO + self-driven compliance

• • Fractional CISO: $96k/year
• • Compliance platform: $12k/year
• • External auditor: $18k
• • Founder + engineering hours: ~180 hours (worth ~$25k in opportunity cost)
• • Total: ~$151k cash + $25k opportunity = $176k

Option B: Probo alone

• • Probo managed service (including auditor): ~$35k-45k
• • Founder + engineering hours: ~20 hours
• • Total: ~$40k cash + $3k opportunity = $43k

Option C: Probo + fractional CISO (later)

• • Probo (year 1): ~$40k
• • Fractional CISO added at month 14: ~$96k/year starting year 2
• • Total year 1: ~$40k. Year 2: ~$136k.

The delta between Option A and B is ~$130k in year one, at the cost of the CISO's leadership narrative - which most early-stage companies don't actually need in front of buyers yet.

Three scenarios where hiring a CISO first makes sense:

1. You're selling to regulated enterprise buyers in year one. Defense, critical infrastructure, top-tier financial services. Their vendor review teams want to speak to your CISO by name. No amount of compliance posture substitutes for the title.

2. You're raising a growth round soon. Series B and later rounds increasingly ask "who's your security leader?" as a diligence question. A fractional CISO can be a credible answer.

3. You've had a security incident. Board-level narrative matters more than compliance paperwork in this case. Get the CISO in fast.

Under 40 people, pre-enterprise: Probo alone. Execution is the bottleneck, not strategy. Add a CISO later.

40-80 people, early enterprise pipeline: Probo for execution. Fractional CISO added as you scale, focused on board narrative and buyer-facing presence.

80+ people, regulated verticals: Full-time security lead becomes the default. Probo continues as the execution layer underneath - most mature security organizations still outsource compliance program management to a specialist partner.

If you only have budget for one, pick execution. Buyers will forgive a missing CISO name if your SOC 2 report is clean and your questionnaire response time is under 48 hours. They won't forgive a CISO with a half-built program.