How to Set Up Security Basics for Your Startup
Implement the foundational security measures every startup needs to protect customer data, pass vendor security reviews, and build trust. Cover authentication, access control, encryption, and compliance essentials.
Before You Start
- 1
A deployed application handling user data
- 2
Admin access to your cloud infrastructure
- 3
Basic understanding of web application security concepts
Step-by-Step Guide
Secure your team's access with a password manager and MFA
Roll out 1Password for your entire team. Create shared vaults for different access levels: engineering, marketing, finance, and company-wide. Enforce a policy: every credential goes in 1Password, no exceptions. Enable multi-factor authentication on every service that supports it, starting with: cloud provider (AWS, GCP), GitHub, email, payment processor, and admin panels. Use hardware keys (YubiKey) for your most critical accounts.
The number one cause of startup security breaches is compromised credentials. A password manager with MFA blocks over 90% of common attack vectors. This single step is the highest-impact security investment you can make.
Set up Cloudflare for DDoS protection and edge security
Put your domain behind Cloudflare. Enable: (1) SSL/TLS encryption with 'Full (Strict)' mode, (2) DDoS protection (automatic on all plans), (3) Web Application Firewall (WAF) with managed rulesets, (4) rate limiting on authentication endpoints (login, signup, password reset) to prevent brute force attacks, (5) bot management to filter malicious automated traffic. Configure security headers: HSTS, X-Content-Type-Options, X-Frame-Options, and Content-Security-Policy.
Cloudflare's free tier provides DDoS protection and basic WAF rules, which is sufficient for most early-stage startups. Upgrade to Pro only when you need advanced WAF rules or more granular rate limiting.
Implement application security fundamentals
Address the OWASP Top 10 in your application: (1) Use parameterized queries or an ORM to prevent SQL injection. (2) Sanitize and escape all user input to prevent XSS. (3) Implement CSRF tokens on all forms. (4) Set secure, HttpOnly, SameSite flags on cookies. (5) Hash passwords with bcrypt or Argon2 (never store plaintext). (6) Validate and sanitize file uploads. (7) Implement proper access control checks on every API endpoint. Run an automated security scan with tools like npm audit, Snyk, or GitHub's Dependabot.
Enable GitHub's Dependabot and CodeQL scanning on your repositories. These free tools automatically detect vulnerable dependencies and common security issues in your code. Fix critical and high-severity alerts within 48 hours.
Set up audit logging and access controls
Log all authentication events (login, logout, password changes, MFA changes), all admin actions, all data access and modifications, and all API calls with the requesting user. Store logs in a centralized, tamper-resistant location (not just the application database). Implement role-based access control (RBAC) in your application and your infrastructure. Follow the principle of least privilege: every team member gets the minimum access needed for their role.
Structure your logs as JSON with consistent fields: timestamp, user_id, action, resource, ip_address, and result (success/failure). This makes them queryable and useful during incident investigation.
Prepare for compliance and vendor security reviews
Use Vanta to automate SOC 2 compliance monitoring. Vanta continuously checks your infrastructure, code, and processes against the SOC 2 framework and flags gaps. Even if you are not pursuing SOC 2 certification yet, the checklist ensures you have reasonable security controls. Create these essential documents: (1) Security Policy, (2) Incident Response Plan, (3) Data Processing Agreement for customers, (4) Privacy Policy compliant with GDPR and CCPA. These documents are required for most enterprise sales.
Start SOC 2 preparation 3-6 months before you need certification. Vanta can get you audit-ready in 2-3 months with dedicated effort. Enterprise customers increasingly require SOC 2 before signing contracts, so starting early removes a sales blocker.
