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Startup Security Roadmap: Seed to Series C

Security at the wrong time wastes money or blocks deals. Here's what to prioritize at each funding stage—and what can wait.

Security at the Wrong Time

Two startup stories: Company A spent their pre-seed money on a SOC 2 audit before they had product-market fit. Company B ignored security until a Series B prospect required it—then scrambled for 6 months while deals waited.

Both got it wrong. Security that's too early burns capital on compliance for customers you don't have yet. Security that's too late blocks revenue and creates technical debt. The right approach matches security investment to your stage.

This guide provides a stage-by-stage roadmap for startup security—what to prioritize at each funding stage and why.

70%
of Series A+ deals involve security due diligence
Vanta Research
6-9mo
average time to SOC 2 Type II from scratch
Industry average
$50-150K
typical Year 1 SOC 2 total cost
Startup benchmarks

Pre-Seed / Seed: Security Foundations

The Reality

You're building product, finding customers, and conserving cash. You don't need SOC 2. You do need foundations that don't create massive technical debt later.

Priority: Don't Create Problems

Must Have:

  • MFA on all accounts (Google Workspace, AWS, GitHub)
  • SSO via Google Workspace or Okta Starter
  • Encryption in transit (HTTPS everywhere)
  • Encryption at rest (turn on database encryption)
  • Secrets management (not in code, use env vars or vault)
  • Basic access control (who can access production?)

Don't Need Yet:

  • SOC 2 certification
  • Formal security policies
  • Penetration testing
  • Security awareness training platform
  • SIEM or advanced monitoring
  • Dedicated security hire
Seed Stage Goal

Build secure defaults into your architecture so you don't have to rearchitect later. Encryption, access control, and secrets management are much harder to add than to start with.

Time Investment

~2-4 hours total to set up basics. No ongoing dedicated time needed yet.

Cost

Near zero. These controls are free or included in tools you're already using.

Series A: Security Program Basics

The Reality

You have product-market fit. You're hiring. Enterprise prospects are starting to ask about security. You need a real program, but you're not ready for SOC 2.

Priority: Build the Program

Area
What to Implement
Why Now
Policies
Core 5 policies (InfoSec, Access, AUP, IR, Data)
Customers ask, foundation for SOC 2
Access Control
RBAC, quarterly access reviews
More employees = more risk
Endpoint Security
EDR/endpoint protection on all devices
Laptops are attack targets
Vulnerability Scanning
Automated scanning in CI/CD
Find issues before attackers
Incident Response
Documented IR plan, test it once
Know what to do when (not if)
Vendor Security
Basic vendor assessment for critical vendors
Your vendors are your risk
Series A Inflection

Series A is when security questions start appearing in sales cycles. Having policies, basic controls, and a "path to SOC 2" story satisfies most prospects at this stage. You don't need the certification yet—you need the foundation.

Time Investment

Designate a security lead (20% of someone's time). Expect 2-4 weeks of setup work.

Cost

$10-30K/year for tools (endpoint protection, compliance platform, vulnerability scanning).

Series B: Compliance Readiness

The Reality

Enterprise deals are real now. SOC 2 is blocking pipeline. You need certification, not just a program.

Priority: Get SOC 2

Month 1-2: Gap Assessment

Use your Series A foundation. Identify gaps against SOC 2 Trust Services Criteria. Choose an auditor.

Month 3-4: Remediation

Close gaps: formalize policies, implement missing controls, set up evidence collection.

Month 5: Type I Audit (Optional)

Point-in-time assessment. Unblocks deals immediately while you build toward Type II.

Month 6-11: Observation Period

Operate controls consistently. Collect evidence. Fix issues as they arise.

Month 12: Type II Audit

Auditor reviews operating effectiveness over the period. You get your report.

New at Series B:

  • SOC 2 Type II certification
  • Annual penetration testing
  • Formal security awareness training
  • Business continuity/DR plan
  • Cyber insurance
  • Security metrics and reporting

Consider Adding:

  • Security engineer hire (first dedicated)
  • Bug bounty program
  • SIEM/centralized logging
  • ISO 27001 (if selling internationally)
  • Additional Trust Services Criteria
  • Trust center/security portal

Time Investment

Security lead role becomes 50-100% of someone's time. Consider first security hire.

Cost

$50-150K total: compliance platform ($20-40K), auditor ($25-50K), tools ($15-30K), pentest ($10-25K).

Series C+: Security at Scale

The Reality

You're enterprise-grade now. Security is a competitive differentiator. Customers expect mature programs. Regulations may apply directly.

Priority: Mature and Scale

  • Security Team — Dedicated security function (3-5+ people depending on risk)
  • Multiple Certifications — SOC 2 + ISO 27001 + industry-specific (HIPAA, PCI, etc.)
  • Security Operations — 24/7 monitoring, dedicated incident response
  • GRC Program — Formal governance, risk, and compliance function
  • Third-Party Risk Program — Formal vendor risk management
  • Application Security — Secure SDLC, security architecture review
  • Advanced Testing — Red team exercises, continuous pentesting
Series C Reality

At this stage, security is no longer a checkbox—it's a business function. You need dedicated people, mature processes, and security embedded in everything you do. The question isn't "do we need security?" but "how do we do security well?"

Time Investment

Dedicated security team. CISO or Head of Security hire.

Cost

$300K-1M+/year: team salaries, enterprise tools, multiple audits, advanced testing.

The Stage-by-Stage Summary

Stage
Security Focus
Key Milestone
Pre-Seed/Seed
Secure foundations, don't create debt
MFA everywhere, encryption on
Series A
Build the program, answer questions
Core policies, basic controls
Series B
Get certified, unblock enterprise
SOC 2 Type II
Series C+
Mature and scale, competitive advantage
Security team, multiple certs

Common Stage-Timing Mistakes

Mistake 1: SOC 2 at Seed Stage

You don't have the customers who require it. You don't have the team to maintain it. You're burning cash on compliance for deals that don't exist. Wait until you have enterprise pipeline that's actually blocked.

Mistake 2: No Security Until Series B

Starting from zero at Series B means 6-12 months to SOC 2 while deals wait. If you'd built foundations earlier, you'd be 60-70% ready. The basics don't cost much—do them early.

Mistake 3: Hiring Security Too Early (or Too Late)

A security hire at Seed stage is usually wrong (nothing to secure yet). A security hire at Series C is too late (you needed them at Series B). Match hiring to stage.

Mistake 4: Treating Security as One-Time

SOC 2 is annual. Controls need maintenance. Threats evolve. Security is an ongoing program, not a project. Budget time and money for continuous operation.

Quick Start: Know Your Stage

Assess Your Current State

Where are you today? Do you have MFA? Encryption? Policies? Access controls? What's missing for your current stage?

Identify Your Next Stage

When's your next fundraise? What will customers expect? What's blocking deals today?

Plan the Gap

What do you need to add to be ready for the next stage? Build a prioritized roadmap.

Start Early

Begin working on next-stage requirements before you need them. SOC 2 takes 6-12 months—start at Series A.

Next Steps

The right security investment depends on where you are and where you're going. Under-investing blocks deals; over-investing burns capital. Match your security maturity to your stage.

Wherever you are, start with the foundations. MFA, encryption, access control, and basic policies cost almost nothing and prevent the technical debt that makes later security expensive.

Planning your security roadmap? vCISO Lite helps startups build stage-appropriate security programs, track progress toward SOC 2, and demonstrate security maturity to customers and investors—without hiring a full-time CISO.

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