When you fund an early stage company, you fund whatever it has done, and not done, about security. Smaller investors feel that inheritance the most.
Venture investors pressure test almost everything. The market, the team, the product, the cap table, the financial model. The one thing that rarely gets the same scrutiny is the startup’s security, and venture cyber due diligence is still treated as optional in most deals. That gap usually stays invisible until the worst possible moment: the next round, an acquisition offer, or a breach that lands while the company is still finding its footing.
For a large crossover fund, a stumble at one portfolio company is a rounding error. For a smaller VC, a micro fund, an angel syndicate, a family office writing direct checks, a corporate venture arm, or a search fund backing a young company, the math is far less forgiving. You hold a minority stake, you have limited leverage, and you rarely have an in house security team to lean on. When a company you backed early runs into a security wall, it can stall the very momentum your investment was supposed to buy.
The clearest illustration of why this matters is Drizly, an alcohol delivery startup that grew fast and was eventually acquired by Uber.
In 2020, an attacker stole the personal information of about 2.5 million Drizly customers. The entry point was almost mundane. A company executive had reused a short, seven character password that was also exposed in an unrelated breach. That reused credential let the attacker into the executive’s GitHub account, which held source code along with cloud and database credentials. From there the attacker reached Drizly’s production environment and exfiltrated the data.
What makes Drizly a venture lesson rather than just another breach is the history. The Federal Trade Commission found that Drizly and its leadership had been warned about almost exactly this weakness two years earlier, after a separate 2018 incident in which company credentials were exposed on GitHub. The warning signs were present early, when the company was younger and smaller, and they were not addressed.
The consequences arrived later and reached a person, not just a company. When the FTC finalized its order in early 2023, it required Drizly to build a real security program. More striking, it bound the chief executive personally. He is required to put an information security program in place at any future company he leads or where he holds senior security responsibility, for ten years, if that business collects data on more than 25,000 consumers. The order followed the executive, not the company. It landed alongside the criminal conviction of Uber’s former security chief, and together they signaled a trend that should interest anyone funding founders: accountability for security failures now reaches individual officers.
The takeaway for an investor is uncomfortable but useful. The security habits a company forms at the seed stage tend to compound. The shortcut a founder takes when there are five people and no policies becomes the breach that surfaces at Series C, during an acquisition, or in front of a regulator. You are not just funding a product. You are funding a security culture, and you are doing it at the stage when it is cheapest to influence.
That deferral is riskier for smaller investors than for large ones, for a few reasons.
The companies you back are textbook soft targets. A young startup is a small business with a small business security posture: no security leader, informal IT, personal devices, secrets sitting in code repositories, and almost no monitoring. Attackers know this. Verizon’s 2025 Data Breach Investigations Report found that ransomware was present in 88 percent of breaches at small and midsize businesses, against 39 percent at large enterprises. The report attributes the gap to exactly the things early companies lack: layered defenses, fast patching, and the staff to run them.
You have influence, not control. A minority venture stake does not come with the authority to order a security overhaul. What you can do is ask the right questions before you invest and write reasonable expectations into the deal. Both are far easier at the point of funding than afterward.
You absorb the fallout with less cushion. A breach at a portfolio company does not stay at the portfolio company. It can trigger a down round, scare off an acquirer, drain runway on legal and remediation, and pull partner attention away from the rest of the fund. A smaller fund feels each of those more sharply.
It helps to be concrete about the channels through which a security failure erodes the value you funded.
Valuation. A breach during a raise gives the next investor a reason to mark the company down or restructure the terms. Security problems discovered at exit do the same thing to an acquirer’s offer.
Runway. IBM put the global average cost of a data breach at 4.88 million dollars in 2024. A figure like that barely registers at a public company. At a startup living on a finite runway, it can be the difference between the next milestone and a shutdown.
The exit itself. As companies mature, acquirers and later investors run real cyber due diligence. Unaddressed problems that were invisible at seed become deal issues, price cuts, or reasons to walk at the moment you were counting on liquidity.
The fund’s reputation. A messy, public security failure at a company you championed follows the partnership into its next fundraise. Limited partners notice how portfolios are governed.
The answer is not the heavy assessment you would run on a buyout. Venture cyber due diligence should be proportionate to the stage, the check, and the kind of data the company handles. The goal is to surface deal relevant risk quickly, without grinding a fast round to a halt.
A simple way to scale it:
| Stage | Typical Posture | Right-Sized Diligence |
|---|---|---|
| Pre-Seed & Seed | A handful of people, no security function, ad hoc tooling. | A focused founder conversation on security basics, plus a quick external scan for exposed credentials and obvious gaps. |
| Series A | First real customers and sensitive data, still no security owner. | A lightweight review of identity, data handling, key vendors, and any incident history. |
| Series B & Growth | Scaling fast, often holding regulated or large volumes of data. | A closer assessment that begins to resemble the diligence an acquirer will eventually run. |
The principle is that the depth follows the risk. A consumer fintech holding financial data warrants more attention at Series A than a two person developer tool with no customer records. Match the effort to what a breach would actually cost.
When you do look, a short, high signal review answers most of what an early investor needs to know. The essentials:
External exposure and leaked credentials. A quick outside in scan shows what the internet can already see: exposed services, weak configurations, and company passwords sitting in past breach dumps. This is the cheapest, fastest signal available, and it is exactly the weakness that started the Drizly breach.
Identity and access. Is multifactor authentication enforced everywhere that matters, especially on email, code repositories, and cloud accounts? Identity is where most startup compromises begin.
Who owns security. At seed there may be no one, and that is expected. The useful question is whether anyone is accountable and whether the founders treat it as a real priority or a someday problem.
Data and regulatory exposure. What sensitive data does the company collect, and what rules attach to it? A company holding health, financial, or large volumes of consumer data carries obligations that change its risk profile and its future cost of compliance.
Secrets in code. Credentials and keys committed to source code repositories are a recurring cause of startup breaches. A brief check here is high value.
Vendor and third party risk. Startups run on outside platforms. Knowing which vendors hold the company’s data, and how exposed they are, matters because that risk transfers.
Incident history. Has the company already had a security event, a near miss, or a warning it did not act on? As Drizly shows, an ignored early warning is one of the most predictive signals there is.
Diligence only protects you if the findings translate into the deal. In a minority venture investment you will not dictate operations, but you can set reasonable expectations in writing.
Common, founder friendly mechanisms:
Information rights that include periodic visibility into security posture, not just financials.
Security covenants or milestones, such as enforcing multifactor authentication, removing secrets from code, or naming a security owner before the next tranche or by an agreed date.
Baseline expectations that the company will meet a sensible minimum standard as it scales, often supported by the lead investor or the fund.
Representations about past incidents and regulatory compliance, so a known problem is disclosed rather than discovered later.
None of this needs to be adversarial. Framed as part of building a durable company, these terms protect the founder’s outcome as much as yours.
It is worth remembering that the risk is not only on the company side. A venture fund holds exactly what attackers want: deal pipeline, nonpublic company information, limited partner data, and the authority to move money. Wire fraud aimed at capital calls and distributions, and compromise of shared data rooms, are real and recurring threats to investment firms of every size. The same discipline you ask of portfolio companies applies to the fund itself.
The strongest investors treat security as part of value creation, not just a pre deal hurdle. Once you have funded a company, a light touch baseline pays off: a short list of expected controls, a simple way for founders to get help, and, for funds with several portfolio companies, a shared security resource that each company can use without hiring a full team. Raising the floor early is far cheaper than cleaning up a breach later, and it makes every company more attractive at the next round and at exit.
Sentry0 runs cyber due diligence sized for venture deals. Before you invest, we deliver a fast, outside-in read on a target company’s real exposure, the kind of signal that fits inside a competitive round rather than slowing it down. We translate what we find into plain language and into practical terms you can put in front of a founder.
After the round, we help funds set a sensible security baseline across a portfolio and act as fractional security leadership for companies that are not ready to hire their own. The aim is simple: protect the value you funded, and make the companies you back easier to finance, acquire, and trust as they grow.
