- Most breaches exploit basics: credentials, access control and unpatched dependencies.
- Make the secure path the easy path with defaults and templates.
- Automate dependency and secret scanning in CI from the first commit.
- Write down an incident plan before you need one.
Security is a product feature
Early-stage teams are under pressure to ship, and security often feels like something to “add later”. But later rarely arrives — and when it does, it usually arrives as an incident, a failed enterprise security questionnaire or a lost deal. The good news is that a handful of foundational decisions, made early, prevent the vast majority of real-world problems.
Security by design does not mean slowing down. It means choosing defaults that make the secure path the easiest path for every engineer on the team.
Get identity and access right
Authentication and authorisation are where most serious vulnerabilities live. Use a proven identity provider or framework rather than writing your own login system. Enforce multi-factor authentication for every administrative account. Above all, check authorisation on the server for every request — never trust the client to hide what a user should not see.
- Hash passwords with a modern algorithm such as bcrypt or Argon2.
- Use short-lived sessions and rotate tokens.
- Apply least privilege to people, services and cloud roles.
- Log every privileged action.
Protect secrets and data
API keys and database passwords belong in a secrets manager or environment configuration — never in source code, never in client bundles. Encrypt data in transit everywhere with TLS, and at rest for anything sensitive. Collect only the personal data you genuinely need; data you never store can never leak.
“The cheapest security control is the data you decided not to collect.”
Automate the boring parts
Modern CI pipelines make baseline security almost free. Add dependency vulnerability scanning, secret scanning and static analysis from the first commit. Pin dependency versions, keep them updated on a regular schedule and remove packages you no longer use.
Infrastructure as code means security configuration — firewalls, storage permissions, encryption settings — is reviewed in pull requests like any other change, instead of being clicked together in a console and forgotten.
Design for failure
Assume something will eventually go wrong. Automated, tested backups; centralised logging; alerts on unusual activity; and a written incident-response plan turn a potential crisis into a manageable event. Decide in advance who is responsible, how customers will be informed and how you will restore service.
A practical starting checklist
- Review the OWASP Top 10 with the whole team.
- Enable MFA on every cloud, code and email account.
- Turn on dependency and secret scanning in CI.
- Centralise logs and set basic anomaly alerts.
- Test a full backup restore at least once a quarter.
- Commission an independent penetration test before major launches.
These steps take days, not months — and they will make your product dramatically more resilient, and far easier to sell to serious customers.