Cyber Liability Insurance for App and Web Development Agencies
Most of your exposure sits in systems you do not own and cannot monitor. Cyber Insurance Group has agents dedicated to cyber liability, comparing agency coverage across 12+ A-rated carriers.
Compare your agency across 12+ A-rated carriers in about 4 minutes. Free, no obligation, and no need to know your limits in advance. We are an independent agency, so the recommendation is based on what covers your risk, not on one carrier’s product sheet.
Get My QuoteYou Built It, They Run It, Everyone Blames You
An agency carries liability for software it does not operate, in environments it does not control, often years after the invoice was paid.
Credentials that outlive projects
Deployment keys, content management logins and hosting access are rarely revoked on handover, so your agency stays a live route into finished clients.
Production data in staging
Real customer records copied into test environments leave the client’s controls behind and land inside yours, which makes their data your incident.
Dependencies you inherited
Every package, plugin and library you chose is something a client may later argue you were responsible for keeping current.
Ambiguous endings
Projects stop without formally ending. Years later it is unclear who owned maintenance, and the argument happens at your expense regardless of the answer.
A Defect Claim Is Not a Breach Claim
Which policy responds turns on a single question, and agencies routinely buy only one side of it.
If the cause was your work
A site breached through a flaw in what you built produces an allegation that your service was deficient. That is a professional services claim and it belongs to technology errors and omissions. A cyber policy bought on its own generally will not reach it.
If the cause was your systems
Your agency is compromised, and client credentials, source code or copied production data are taken. That is cyber liability, and because the data belongs to your clients, the third-party side carries most of the weight.
Most real incidents allege both
A client whose site was defaced or whose customers were exposed will argue the build was inadequate and that your access was the way in, because they do not have to choose. If the two policies sit with different carriers and different wordings, the seam between them is where the claim stalls.
What each kind of tech company is on the hook for
- Software and SaaS companies: you hold your customers’ data. The first claim is your customer’s customers were exposed through your platform.
- Hosting and data centers: you hold your customers’ uptime. The first claim is service credits you owe contractually, which cyber business interruption does not pay.
- Development agencies: you built the thing that failed. The first claim is a defect claim under technology errors and omissions, not a breach claim.
- Security firms: you gave the opinion that it was secure. The first claim is an errors and omissions claim that you missed what you were hired to find.
Why it changes the policy conversation
Two questions matter more than the premium: does the cyber wording exclude professional services, and does the errors and omissions wording exclude data incidents. If both answers are yes and the policies are not coordinated, you are insured for everything except the claim you are most likely to receive. Our data breach response guide walks through the sequence.
Built for Claims From Finished Projects
Claims from past clients
Third-party liability responds when a client alleges their environment was reached through your agency.
Data you were only borrowing
Breach response funds notification when copied production records are exposed from your systems rather than theirs.
Prior acts matter here
Work performed before inception is excluded unless prior acts cover is arranged, which is unusually important for a business whose liability trails years behind delivery.
The agency keeps shipping
Business interruption and extortion coverage respond when your repositories, pipelines or design systems are locked.
Before You Decide
The objections we actually hear from business owners, answered straight.
Does a web development agency need cyber liability insurance?
Yes, and the reason is unusual: most of your exposure sits in systems you do not own. You deploy into client environments, hold credentials to them, and frequently still have access long after the project closed. A compromise of your agency becomes a compromise of every client environment you can still reach.
If a site we built gets breached, is that our liability?
It depends entirely on whether the cause was a defect or an intrusion, and that distinction decides which policy answers. If the site was breached because of a flaw in what you built, the claim is that your work was deficient, which is technology errors and omissions. If your own systems were compromised and client data taken, that is cyber liability. One event can produce both allegations.
Are we liable for a site we handed over years ago?
Often argued, and rarely settled by the contract. Clients who have not patched, updated plugins or renewed maintenance will still look to the agency that built it. What protects you is a written scope that ends, a documented handover, and evidence that ongoing maintenance was offered and declined. What pays for the argument is your policy.
Is using production data in a test environment really a problem?
It is one of the most common and most expensive habits in the sector. Real customer records copied into staging or a developer laptop leave the client’s protected environment and enter yours, usually without the access controls, logging or encryption the production system has. If that copy is breached, it is your incident even though it is their data.
Do we need coverage if we only build the front end?
Usually yes. Front-end work touches the checkout and the forms, which is exactly where payment-page script requirements apply; the detail is on our e-commerce page. You also typically hold deployment credentials and content management access, which is enough on its own to make your agency a route into the client.
What does cyber liability insurance not cover for a development agency?
It does not pay to rewrite the code, finish the project, or refund the engagement. It does not answer a dispute about scope, timeline or quality, which belongs to technology errors and omissions. And it does not cover work performed before the policy incepted unless prior acts cover was specifically arranged.
What Would Cyber Liability Insurance Cost Your Agency?
Pricing follows headcount, the kind of client environments you deploy into, whether you retain access after handover, and the controls you can evidence. See the breakdown in our cost guide, or get a number for your agency.
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