The Startup Security Tech Stack

Security vendors will happily sell you a six-figure platform before you've shipped your first feature. Don't let them. The right security stack depends entirely on your stage, your customers, and what's actually likely to go wrong.

This guide walks through what you actually need at each stage—and what you can skip.

Before you buy anything

Most startups don't need most of what security vendors are selling them. A full-time CISO building an enterprise-grade threat management program at a 50-person company that doesn't have basic monitoring is a real anti-pattern, and it happens regularly.

Before you spend money on tools, ask yourself two questions:

• What are you actually defending against? At the seed stage, it's opportunistic attackers scanning for exposed credentials, misconfigured cloud resources, and unpatched services. Not nation-states. Your tooling should match your threat model.
• What's the simplest thing that works? Ryan McGeehan advises starting with risk conversations, not tool purchases. Enumerate your technology dependencies, identify what could go wrong, then decide what to do about it. Tools come after understanding.

With that in mind, here's what you actually need at each stage.

Pre-seed: the free tier

Budget: under $1,000. Time: a focused weekend.

This isn't a security program. It's basic hygiene. But it covers the attacks that actually hit startups, and it costs almost nothing.

• MFA on everything. Every account that touches infrastructure, code, or production. No exceptions for founders or contractors. MFA alone prevents 99.9% of account compromise attacks. Use authenticator apps, not SMS.
• 1Password for the team. Shared credentials go here. Nowhere else. No Slack messages, no sticky notes, no "I'll just remember it."
• HTTPS everywhere. Every endpoint your product exposes. No exceptions.
• Secrets out of code. This is non-negotiable. If you have API keys, database passwords, or tokens in your codebase, it's only a matter of time before they leak.
• Cloud basics. No public S3 buckets. No overly permissive IAM roles. Never use root credentials for daily operations. Separate production from non-production accounts.
• Enable audit logging. Turn on CloudTrail or equivalent. Even if nobody reads the logs yet, you'll want them when something goes wrong—and the average time to discover a breach is 181 days.

That's it. No tools to buy. No vendors to evaluate. Just discipline.

Seed: the open source layer

Budget: under $5,000/year.

At this stage, you're shipping product and probably have a small engineering team. The open source security tooling ecosystem is genuinely excellent now, and for a team of 5–20 engineers, it's often better than the commercial alternatives.

What to add

• Trivy for dependency and container scanning. MIT-licensed, lightweight, runs in CI/CD. Catches known vulnerabilities in your dependencies before they ship. 70% of critical security debt now comes from third-party code—supply chain security is no longer optional.
• Secrets scanning in your pipeline. TruffleHog or GitGuardian as a pre-commit hook or CI step. Catches leaked credentials before they reach your repository. This is one of the highest-value, lowest-effort security controls you can add.
• Prowler for cloud security posture. Open source, runs against your AWS (or Azure/GCP) account, and tells you what's misconfigured. It probably won't stay free and open forever, but it's good enough for seed stage. Run it monthly and fix the critical findings.
• Basic logging and alerting. At minimum, ship your CloudTrail logs somewhere durable and set up alerts for root account usage, IAM changes, and security group modifications.
• Backups. Automated, tested, stored somewhere separate from production. Test restoration at least once.

What to skip

• Commercial SAST/DAST platforms. You don't need a $50K/year application security platform at this stage.
• SIEM. You don't generate enough log volume to justify a SIEM. Basic CloudWatch or equivalent is fine.
• EDR/endpoint protection. Nice to have, not essential yet. Focus on identity and access controls first.
• Bug bounty programs. You don't have the process to triage inbound reports well yet. Consider this at Series A.

Series A: paying for things

Budget: $30,000–$80,000/year.

This is where the stack gets real. Enterprise customers are showing up with security questionnaires. Compliance is no longer theoretical. And you probably need to start paying for some things.

Compliance automation

Vanta or Drata. Vanta is more beginner-friendly with a clean onboarding experience. Drata is better for technical teams that want deeper DevOps integration and more control over automation.

Both will cost $10,000–$50,000/year for the platform. But don't be fooled by the platform pricing—neither eliminates the need for audit fees ($5,000–$50,000) or consulting ($10,000–$30,000). Total first-year compliance cost is realistically $30,000–$80,000 all in.

SSO and identity

Okta for your internal SSO. Every SaaS application your team uses should authenticate through your identity provider. No standalone username/password logins. This gives you a single place to enforce MFA, manage access, and instantly deprovision people when they leave.

More importantly: build SAML/SSO support into your own product as early as you can. This is covered in detail in The SSO question below.

AI-native code security

Traditional SAST tools were built for a world where humans wrote all the code. That world is disappearing. If your team is using AI-assisted development—and they probably are—you need tools that understand what AI-generated code gets wrong.

Claude Code Security scans codebases for vulnerabilities and suggests targeted patches for human review. Unlike traditional SAST tools that rely on pattern matching, it analyses code the way a human security researcher would—understanding component interactions and tracing data flow to catch complex issues in business logic and access controls. Every finding goes through multi-stage verification where it attempts to disprove its own results, which keeps false positives low.

Dam Secure lets you define security rules in plain English and enforces them in real time as developers write code—in the IDE, before anything reaches CI/CD. This is particularly valuable for vibe coding workflows where code is generated fast and reviewed lightly. Define your paved roads once, enforce them everywhere.

Bug bounty

Contrary to common advice, Series A is a good time to start a bug bounty program—if you can afford the triage. The signal from external researchers is incredibly high when you structure the program well. Pay meaningful bounties for high and critical severity issues, and explicitly exclude the low-value noise (missing security headers, clickjacking on non-sensitive pages, banner version disclosures). If you don't filter aggressively, you'll drown in junk reports and burn out on the program before it delivers value.

What to skip

• Full SIEM deployment. Not yet. Centralised logging with basic alerting is enough.
• Red team exercises. You don't have the maturity to benefit from adversarial simulation yet. Invest in the basics first.

Series B+: the enterprise stack

Budget: $150,000+/year.

At this point, you're selling to enterprises, handling significant data, and probably have (or need) a dedicated security person. The stack matures accordingly.

• EDR/endpoint protection. Every company device needs endpoint detection and response. CrowdStrike, SentinelOne, or similar.
• SIEM or log aggregation with alerting. You're generating enough data to justify centralised log management. Datadog Security, Panther, or Elastic Security depending on your existing stack.
• Regular penetration testing. At least annually, budget $20,000+. Bessemer recommends each pentest simulate targeted phishing attacks on employees, not just technical testing.
• Vendor risk management. You're now a vendor to your enterprise customers, and they're auditing you. You also depend on vendors yourself. Formalise how you evaluate third-party security. More than half of breaches are caused by third parties.
• Cyber insurance. At this stage, it's table stakes. A standard policy runs $900–$5,000/year for companies under 50 employees—cheap relative to the coverage ($1M per occurrence typical). Larger companies will pay more, but the cost scales reasonably.
• Vulnerability management with SLAs. Enterprise buyers expect documented resolution timelines—typically 90 days for critical vulnerabilities.

A note on investor expectations: 66% of VCs now conduct cybersecurity due diligence before funding rounds. They're looking for SOC 2 Type II or ISO 27001, a documented incident response plan, data flow diagrams, disaster recovery plans, and cyber insurance. Cyber risk can reduce valuations, delay rounds, or kill deals.

Security in the AI era

If your team is vibe coding—generating code with AI assistants, shipping fast, reviewing lightly—your security tooling needs to match that workflow. Traditional scanners that run after deployment and produce a spreadsheet of findings three months later are useless in this world.

The shift is from gates to guardrails. Gates block developers and create friction. Guardrails guide them toward the right patterns without slowing them down.

Practically, this means:

• Pre-commit hooks for the worst offenses. Secrets in code, obvious injection patterns. Catch them before they even reach your repository.
• IDE-level enforcement. Tools like Dam Secure let you define security standards in plain English and enforce them as code is written—not after it ships. Define your secure defaults once and they apply to every developer, whether they're writing code manually or generating it with AI.
• AI-native code review. Claude Code Security catches logic flaws and context-dependent vulnerabilities that pattern-matching scanners miss entirely. It analyses code like a security researcher, not a regex engine.
• Dependency scanning in CI/CD. Non-negotiable. Every pull request should be scanned for known vulnerable dependencies.

The principle behind all of this is Netflix's "paved roads" approach: make the secure choice the default choice. When the secure way is also the easy way, developers naturally build safer applications. When it's not, they route around your security controls.

The SSO question

Build SAML/SSO support into your product as early as you possibly can. This is the single best security investment you can make as a startup.

Here's why: every enterprise buyer will require it. It's a prerequisite for SOC 2. And retrofitting SSO into an existing authentication system later is enormously expensive and disruptive. I've seen teams spend months untangling their auth layer to add SAML support that could have been designed in from the start.

You don't need to build a perfect implementation on day one. Start with whatever you can—basic SAML support, OAuth integration, even just "Sign in with Google" for your first few enterprise customers. But architect your auth layer with SSO in mind from the beginning, so you're not rewriting it later.

This isn't just a security decision. It's a revenue decision. Enterprise deals stall when SSO isn't available, and competitors who support it will win those deals instead.

The full stack at a glance

Stage	What to add	What to skip	Cost
Pre-seed	MFA, 1Password, HTTPS, cloud hygiene, audit logging	Everything else	<$1K
Seed	Trivy, TruffleHog/GitGuardian, Prowler, backups	Commercial SAST/DAST, SIEM, EDR	<$5K/yr
Series A	Vanta/Drata, Okta, SSO in your product, Dam Secure, bug bounty	Full SIEM, red team	$30–80K/yr
Series B+	EDR, SIEM, pentesting, vendor risk mgmt, cyber insurance, vuln mgmt SLAs	Building everything in-house	$150K+/yr

The most important thing about this table isn't what's in it—it's what isn't. At every stage, there are things you should deliberately skip. Security vendors will tell you everything is urgent. It isn't. Match your investment to your actual stage and your actual threats, not to someone else's sales quota.

If you're unsure what you need at your stage, reach out. I'm happy to help you figure it out.

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Further reading: Starting Up Security by Ryan McGeehan, Bessemer's guide to security for startups, MVSP — Minimum Viable Secure Product by Google, Salesforce, Okta & Slack, SaaS CTO Security Checklist.

This post is part of a series on startup security. See also: "When to Make Your First Security Hire".