Who Should Own Security in a Web3 Startup?

A Web3 startup may have audited smart contracts, active wallets and security tools—but that does not mean security has a clear owner.

Who can stop an unsafe launch? Who controls critical access? Who leads the response when something goes wrong?

Without clear ownership, important security decisions may be delayed, ignored or left to the wrong person.

A Web3 startup may need to protect:

• Smart contracts
• Treasury wallets
• Private keys
• Customer accounts
• Cloud infrastructure
• Front-end applications
• APIs and databases
• Administrator permissions
• Token or governance systems
• Third-party integrations
• Community communication channels

These areas are connected, but they do not always have the same owner.

The Founder or CEO Owns the Business Risk

The founder or CEO should not personally manage every technical control.

However, leadership remains accountable for ensuring that security receives enough attention, budget and authority.

Leadership responsibilities may include:

• Deciding how much risk the company is prepared to accept
• Approving security priorities and resources
• Confirming that important systems have named owners
• Supporting delays when security concerns make a launch unsafe
• Reviewing major incidents and unresolved risks
• Ensuring that commercial pressure does not override essential controls

A technical team cannot protect the business if leadership repeatedly asks it to ignore risks to meet a deadline.

Security ownership begins with executive support.

A Security Lead Should Coordinate the Programme

A Web3 startup should name one person to coordinate security across the company.

Depending on the team, this person could be:

• A Head of Security
• A security engineer
• A security-focused CTO
• An experienced engineering leader
• A fractional security leader
• A senior employee supported by external specialists

This person should not be expected to complete every security task alone.

Their role is to make sure responsibilities are clear, risks are recorded, controls are tested and serious issues reach the correct decision-makers.

A security lead may coordinate:

• Security planning
• Threat modelling
• Smart contract reviews
• Infrastructure assessments
• Access-control reviews
• External audits
• Vulnerability reporting
• Incident-response preparation
• Security training
• Post-incident improvements

Most importantly, the security lead needs authority to raise concerns and recommend that a release be delayed.

The CTO Owns Technical Security Decisions

In a small startup, the CTO may also act as the security lead.

The CTO should ensure that security is included in architecture and development decisions rather than added at the end.

This may include ownership of:

• Secure development practices
• Code-review requirements
• Testing standards
• Deployment approvals
• Infrastructure design
• Dependency management
• Logging and monitoring
• Technical incident response

The CTO should also know which decisions require independent review.

Being responsible for delivery does not mean the same person should approve every high-risk change without challenge.

Smart Contract Engineers Own Secure Development

Smart contract engineers are responsible for understanding how their code can fail or be misused.

Their responsibilities may include:

• Following secure coding standards
• Writing automated tests
• Testing unusual and hostile scenarios
• Reviewing permissions and upgrade functions
• Documenting assumptions and dependencies
• Responding to audit findings
• Supporting monitoring after deployment

Testing should combine appropriate methods rather than depend on one final review. Ethereum’s documentation notes that automated and manual testing offer different benefits and can be used together when analysing smart contracts.

The OWASP Smart Contract Top 10 can also help development and security teams understand common risk categories affecting smart contracts.

Developers own secure implementation, but they should not be the only people deciding whether their work is safe enough to launch.

Infrastructure and Application Security Need Separate Attention

A secure smart contract does not automatically create a secure product.

Attackers may target the website, cloud environment, APIs, administrator accounts or software supply chain instead.

The person responsible for infrastructure or platform engineering should manage areas such as:

• Cloud permissions
• Production access
• Multi-factor authentication
• Secrets management
• Software updates
• Backups
• Network monitoring
• Deployment pipelines
• Environment separation
• Third-party services

The product or application team should also review how users interact with wallets, transactions and permissions.

A technically correct contract can still create risk if the interface encourages users to approve the wrong action or cannot clearly explain what they are signing.

Wallets and Treasury Need Named Owners

Wallet security should not be treated as a small administrative task.

The company should document:

• Who controls each wallet
• What the wallet may be used for
• Who can approve transactions
• How signers are added or removed
• Where recovery information is stored
• What happens if a signer becomes unavailable
• Which transactions require additional approval
• How suspicious activity will be detected

Critical actions should not depend entirely on one employee or one device.

OpenZeppelin explains that multisignature mechanisms can require several registered signers to approve important transactions, preventing one signer from acting alone.

Using a multisignature wallet is not enough by itself. The company must still choose appropriate signers, protect their access and maintain a recovery process.

Access Controls Need Business and Technical Owners

Web3 access controls may determine who can:

• Upgrade contracts
• Mint tokens
• Pause transactions
• Move treasury funds
• Change fees
• Modify governance settings
• Add or remove administrators

OpenZeppelin notes that smart contract access controls can govern sensitive actions such as minting, voting and freezing transfers.

The engineering team may implement these controls, but leadership should approve who receives powerful permissions.

Every privileged role should have a clear business purpose and named owner.

Permissions should also be reviewed when someone changes roles or leaves the company.

External Auditors Provide Assurance, Not Ownership

An external audit can help identify weaknesses that the internal team missed.

However, an audit does not transfer responsibility away from the startup.

The company still needs to decide:

• Which findings must be fixed before launch
• Who will complete the changes
• Whether the fixes need another review
• How accepted risks will be recorded
• Who monitors the contracts after deployment
• What happens when the product changes

An audit covers a defined version and scope. New code, changed permissions or updated integrations may introduce new risks.

The internal team must own the response before and after the audit.

Someone Must Own Incident Response

Security ownership becomes most visible when something goes wrong.

The company should name an incident lead before an incident occurs.

That person coordinates the response and ensures that technical, operational, legal and communication tasks are connected.

A Web3 incident plan should answer questions such as:

• Who confirms that an incident is taking place?
• Who can pause affected systems?
• Who contacts wallet providers, exchanges or infrastructure partners?
• Who preserves logs and evidence?
• Who communicates with users?
• Who reviews legal or regulatory obligations?
• Who approves public statements?
• Who decides when operations can resume?

CISA’s incident-response playbooks recommend documenting response processes and designating a coordination lead or incident manager.

A plan should also be tested. A document that nobody has practised may not help during a fast-moving security event.

Legal, Compliance and Communications Also Have Roles

Not every security decision is purely technical.

Depending on the company’s activities and locations, legal or compliance specialists may need to assess:

• Data-protection obligations
• Financial crime controls
• Customer notifications
• Record retention
• Reporting requirements
• Contractual responsibilities
• Restrictions affecting transactions or users

The communications team may also need prepared processes for community updates, status messages and misinformation.

These teams should support the incident lead without publishing unverified information or delaying urgent technical action.

How Should a Small Web3 Startup Assign Ownership?

Begin by listing the systems and decisions that could create serious harm if compromised.

These may include:

• Smart contracts
• Treasury wallets
• Administrator keys
• Cloud infrastructure
• Customer information
• Token controls
• Governance permissions
• Production deployments
• Incident communications

For each area, name:

• A primary owner
• A backup owner
• The person who approves high-risk changes
• The specialist who provides independent review
• The process used during an emergency

If one employee appears as the owner of almost everything, the startup may be relying too heavily on that person.

Security Ownership Should Grow With the Company

The first security structure does not need to be permanent.

An early startup may rely on a security-focused CTO, external auditors and specialist advisers.

As the product, assets and user base grow, the company may need:

• A dedicated security engineer
• A smart contract security specialist
• An infrastructure security engineer
• A security leader
• Incident-response capability
• Governance or treasury specialists
• Legal and compliance professionals

Hiring should follow the company’s actual risk, not a standard organisational chart.

The useful question is not simply, “Do we need a CISO?”

It is:

Which security responsibilities are currently too important, specialised or time-consuming to remain part of someone else’s job?

Security Belongs to the Company

Security in a Web3 startup should not belong only to the smart contract developer, CTO or external auditor.

Leadership owns the business risk. A security lead coordinates the programme. Engineers secure the systems they build. Operations protects wallets and access. Legal, compliance and communications support the response when required.

The strongest structure is one in which every important risk has a named owner—and every owner has enough authority, knowledge and support to act.

How Nindar Can Help

Nindar Consulting helps Web3, AI and technology companies recruit specialist professionals across global markets.

Through specialist recruitment, executive search, RPO and talent mapping, Nindar helps employers define security responsibilities and find professionals with relevant technical and leadership experience.

Building or expanding a Web3 security team? Contact Nindar to discuss the skills and ownership your company needs.

This article provides general hiring and security information, not legal, technical or regulatory advice. Requirements vary by product and market. Seek qualified advice where necessary.