Most pre-IPO cybersecurity companies run marketing as five separate functions reporting five separate numbers, none of them accountable to pipeline. I pull demand generation, product marketing, brand, content, and revenue operations into one motion and give it a single number to hit. The domain matters as much as the motion, and mine is identity threat intelligence, dark web monitoring, endpoint breach prevention, IAM, and SaaS security, sold into commercial, enterprise, and public sector buyers.
Three ways I move the needle
I work as a Fractional CMO and GTM Advisor for Seed to Series C cybersecurity companies, and I’m open to full-time CMO and VP of Marketing roles.
Demand Gen Engines
Builds full-funnel demand generation from the ground up, pivoting teams from lead gen to pipeline-accountable demand gen inside months, not quarters.
Category & Product Marketing
Sharpens brand and product positioning so buyers understand why a category, and this company within it, matters right now.
Team & Budget Stewardship
Leads and mentors marketing teams up to 20, managing multi-million-dollar budgets with the discipline boards expect at every stage.
Signal, not noise
Named to the top 50 GTM women voices of the US, 2026
Fifty women running go-to-market across the United States, selected on the work itself rather than reach. The list is not ranked. A jury of eight reviews all fifty names and chooses a top 10 from them.
Built and ran a national CISO summit series, two years running
From Napa Valley to Newport, RI, I conceived and led HYPR’s flagship executive summit series from the ground up, venue, guest list, agenda, and speaker lineup, designed as one seamless experience for a room of CISOs and security leaders. It’s the same discipline behind the proprietary conference program that delivered a 1,112% ROI: high-trust gatherings, built to convert relationships into pipeline.
Where I add the most value
Markets I speak fluently
Marketing leadership, seed through growth stage
GTM Alignment Diagnostic
Score alignment across marketing, sales, product, and customer success, then leave with a first-draft 30-60-90 plan built on my proprietary Observe / Analyze / Execute framework. The free Scan runs in seven minutes. The Full Diagnostic goes thirteen dimensions deep, self-serve or as a guided workshop, with a comprehensive plan your team can execute.
free 7-min scan · full diagnostic $395 self-serve / $695 guided · functions & budget math
Run the free Scan →GTM Radar
A live, searchable database of every open go-to-market role at pre-IPO cybersecurity companies, VC- and PE-backed, with listings pulled in real time from public hiring-system APIs.
live data · filter by function, seniority & investor
Open GTM Radar →
Latest field notes
How to Build an AI Assistant That Runs Your To-Do List and Streamlines Your Day
One prompt, four steps, and the cybersecurity questions to answer before you connect a single account.
GTM StrategyWhat Good Looks Like in a New Marketing Leader’s First Six Months
What to expect at 30 days, 90 days, and six months, how to hand off from a fractional leader, and when converting one to full-time works for both sides.
GTM StrategyHow to Scope a Fractional CMO Engagement, and Know If It’s Working
Fractional describes the contract, not the hours. How to shape an engagement around the gaps, set goals, and judge it at six months.
Common questions
Who is Christine Castro?
Christine Castro is a B2B cybersecurity marketing executive and a Fractional CMO and GTM Advisor for Seed to Series C cybersecurity companies. She pulls demand generation, product marketing, brand, content and revenue operations into one motion accountable to pipeline. She was named to N.Rich’s Top 50 GTM Women Voices of the US 2026, and her full background is on the About page.
Does Christine work as a fractional CMO for cybersecurity companies?
Yes. Christine takes fractional and advisory engagements with cybersecurity companies, and she is also open to full-time CMO and VP of Marketing roles. See how she runs a fractional CMO engagement for cybersecurity companies.
What stage of company is the best fit?
Pre-IPO cybersecurity companies from Seed through Series C are the best fit, along with GRC, compliance and security-adjacent B2B SaaS companies. That is the range where marketing usually has to be built, or rebuilt, into one motion with a single pipeline number to hit.
What free GTM tools are on this site?
GTM Radar is a live, searchable database of open go-to-market roles at pre-IPO cybersecurity companies. The GTM Alignment Diagnostic includes a free seven-minute Scan that scores alignment across marketing, sales, product and customer success. The site also has planners and calculators for pipeline coverage, events and board reporting.
How do I hire a CMO for a cybersecurity startup?
Start by deciding whether you need a full-time CMO or VP of Marketing now, or a fractional leader to build the foundation first. The guide on how to hire a CMO for a cybersecurity startup walks through that decision. If you’d like to talk it through, book a conversation.
Building your next GTM engine? Let’s talk.
Open to CMO and VP/SVP of Marketing roles at cybersecurity, GRC/compliance, and security-adjacent B2B SaaS companies ready to scale, as well as advisory, speaking, and contract opportunities. I’ve functioned in advisory capacities alongside full-time leadership roles throughout my career.