Security problems in startups are like termites. By the time you see the damage, the infestation has been going on for months. Most founders discover their security gaps when a prospective customer sends a security questionnaire, or worse, when something actually goes wrong.
Here are five early warning signs that your startup has a security problem, and what to do about each one.
1. You have no idea who has access to what
Open your AWS console. Can you name every IAM user and explain why they have the permissions they do? Check your GitHub org. Are there former employees or contractors who still have access? Look at your SaaS tools. How many people have admin access to your CRM, your analytics platform, your payment processor?
If you cannot answer these questions in under five minutes, you have an access control problem. This is the number one security issue we find in early-stage startups. People are added to systems and never removed. Permissions are granted broadly because it is easier than figuring out the minimum required access.
Fix: Do an access audit today. It takes about two hours. List every system, every user, and their permission level. Remove anyone who should not be there. Then set a calendar reminder to do this quarterly.
2. Your secrets are in your code
Search your git history for strings like "password", "api_key", "secret", or "token". If you find credentials in committed code, even if they are in a branch that was never merged, they are compromised. Git history is forever, and anyone with repo access can find them.
This is more common than you would think. We have found production database passwords, Stripe API keys, and AWS root credentials in startup codebases. Once a secret is in git, rotating it is the only safe option.
Fix: Move all secrets to environment variables or a secrets manager (AWS Secrets Manager, HashiCorp Vault, or even a simple .env file that is gitignored). Install a pre-commit hook like gitleaks or trufflehog to prevent secrets from being committed in the future. Then rotate every credential that has ever been in your codebase.
3. You have no logging or monitoring
If your production application goes down right now, how would you know? If someone accessed your database and exported all customer records, would you have any evidence? If a developer pushed malicious code to production, could you trace it back?
Many startups have zero centralized logging. Application logs go to stdout and disappear. There are no access logs for critical systems. There is no alerting for suspicious activity. This means that if a security incident happens, you have no forensic trail to investigate.
Fix: At minimum, set up centralized logging for your application, your infrastructure, and your authentication system. Use a tool like Datadog, CloudWatch, or even a self-hosted ELK stack. Configure alerts for failed login attempts, privilege escalation, and unusual data access patterns. This does not have to be expensive or complex. A basic setup takes a day.
4. Nobody owns security
When you ask "who is responsible for security?" at your company, what happens? If the answer is "everyone" or "the engineering team" or a long pause, that means nobody owns it. Security without ownership is security without accountability, and security without accountability is no security at all.
Fix: Assign a security owner. At your stage, this does not need to be a full-time role. Pick someone on the engineering team who is interested and give them 10 to 20 percent of their time to focus on security. Give them a budget, even a small one, and clear objectives: implement SSO, run a vulnerability scan, set up logging. If nobody on the team is qualified, bring in a fractional CISO to set the foundation.
5. You have never tested your own defenses
When was the last time someone tried to break into your application? Not a real attacker, a deliberate security test. If the answer is "never," you do not know what your vulnerabilities are. You are relying on the assumption that your developers wrote secure code, which is a dangerous assumption.
Fix: Run a penetration test. For an early-stage startup, a basic web application pen test costs $5,000 to $15,000 and takes one to two weeks. The findings will give you a prioritized list of vulnerabilities to fix. Many are quick wins: missing security headers, open redirect vulnerabilities, insecure direct object references. Fix the critical and high findings immediately, then schedule annual retesting.
The bottom line
Security does not have to be expensive or time-consuming at the startup stage. But it does have to be intentional. Ignoring it until a customer forces the conversation puts you in a reactive position where everything is urgent and nothing is planned. Spend a week addressing these five areas and you will be ahead of 90% of startups at your stage.