The Moment Everything Changes — Why I Write for Growing Startups

There is a moment.

It does not announce itself. It does not arrive with a calendar invite or a board resolution or a memo from the legal team. It arrives quietly, usually in the middle of something else, a sales call, a due diligence request, a conversation with a new investor, a customer asking a question your team has never been asked before.

The moment when the founder realises that the way they have been managing security, the way that was completely reasonable and genuinely sufficient when the company was twelve people moving fast with everything to prove, is no longer adequate for the company they are in the process of becoming.

I have seen this moment from the inside. I have studied what happens before it, during it, and after it. And I have spent a significant part of my career thinking about how to help the people who are standing in the middle of it not after the fact, not once the incident has happened and the damage is visible, but before. In the space between knowing something needs to change and knowing what to do about it.

That is why I write for growing startups. This article is the one where I tell you exactly what I see happening inside these organisations the frustrations, the postponements, the internal conversations that happen behind closed doors and why I believe, with everything I know about this field, that the work I do matters most at this specific stage of a company's life.

Who I Am Actually Writing For

When I say growing startup, I am not being vague. I mean something specific. I mean the company that has found its product market fit and is scaling into it. The one that has moved from survival mode into growth mode, from "will this work?" into "how do we make this work at ten times the current size." The one that has raised institutional capital, or is about to, and is now operating under a level of scrutiny that early stage stealth mode never required.

I mean the founder who built something remarkable through a combination of vision, resilience, and a small team operating on trust and speed, and who is now navigating the transition from founder led everything to a company with departments, processes, and external obligations that did not exist eighteen months ago.

I mean the CTO who made hundreds of architectural decisions under time pressure during the early years, decisions that were right for that moment and that have now become the infrastructure a much larger, much more exposed organisation is running on.

I mean the Head of Security who joined at Series A or B and walked into an environment that was built for a company half this size, with a mandate to fix it, a team that is smaller than the job requires, and leadership that understands security matters but is not always sure what it should cost or what it should look like.

I mean the engineering team that has been told security is a priority while simultaneously being measured on velocity, feature output, and sprint completion and that has quietly learned, through the feedback it receives week after week, which of those things the organisation actually means.

These are the people I write for, not because they are easy because they are not, but because this is the stage where security decisions compound most dramatically. Where the right choices build something that lasts and the wrong ones create the conditions for incidents that are, in retrospect, entirely avoidable.

What Is Actually Happening Inside These Companies

Let me tell you what I see when I look closely at a growing startup navigating this transition. This is not the version that appears in press releases or pitch decks but the internal version. The one that happens in Slack channels and late night Notion documents and honest conversations between founders who are trying to figure out how to keep moving forward without breaking something that cannot be easily fixed.

• The Security Conversation That Keeps Getting Postponed:

Every growing startup has a version of this conversation. The one that everybody knows needs to happen and that keeps getting moved to next week, next quarter, after the next hire, after the next fundraise, after things settle down.

"Once we close this enterprise deal, we will do a proper security review."

"Once we hit the hiring plan, we will bring in someone to own this properly."

"Once we get through this sprint, we will revisit the cloud configuration."

Once, Once, Once.

The problem with once is that the enterprise deal closes and the next one is immediately more important. The hiring plan fills and the team is immediately under resourced for the next growth stage. The sprint ends and the next one is already planned and equally urgent.

Security does not get its once. It gets postponed into the category of things that are important but not urgent, right up until it becomes the most urgent thing in the building, usually at the worst possible moment.

The founders and CTOs I respect most are the ones who have learned to see this pattern before it completes. Who have recognised that the conversation they are about to postpone is the one that, if postponed one more time, will not be postponed by their choice but by an incident that forces it.

• The Founder Who Knows More Than They Let On:

There is something I have noticed consistently about the founders I encounter.

They know.

Not always at a technical level nor in the specific language of IAM configurations or CSPM tools or sub processor accountability chains. But at the level of instinct, the way a person who has built something knows when something underneath it is not quite right.

The founder who says "our cloud setup is probably not where it should be" and then changes the subject. The one who sends a late night Slack message to their CTO with three question marks after reading about a breach at a company that looked, from the outside, exactly like theirs. The one who sits in the enterprise sales meeting and answers the security questionnaire with more confidence than they actually feel and then goes back to the office and adds security review to the bottom of a list that never seems to get shorter.

They know and the knowing, without the framework or the capacity or the internal bandwidth to act on it, is one of the most exhausting parts of leading a company at this stage. I write for that founder. The one who knows and needs someone to hand them the structure for doing something about it.

• The CTO Carrying the Weight of the Early Decisions:

The CTO of a Series B startup is almost never the same person who will be the CTO of that company three years later, not because they will leave, but because the role itself changes so dramatically that it requires becoming a different kind of leader.

In the early days, the CTO made decisions at speed, IAM configuration, Cloud architecture, Third-party integrations and Development environment setup. Each decision was made with the information available at the time, under the constraints that existed, for the company that existed.

The company is now three times larger. It is processing ten times the data. It has customers in regulated industries who have contractual expectations about security posture. It has investors who ask about security in board meetings. It has an engineering team of twenty people who make infrastructure decisions daily, each of which has security implications that the CTO cannot personally review.

And underneath all of it, supporting all of it is the architecture built in year one. The architecture the CTO made the calls on. The architecture that has accumulated three years of additions, patches, workarounds, and decisions made by engineers who have since left, under pressures that no longer exist, for a product that has since changed beyond recognition.

The weight of that is real. The CTOs who navigate it best are not the ones who pretend the technical debt does not exist. They are the ones who can look at it clearly, prioritise honestly, and build a remediation programme that the business can fund and the team can execute without stopping everything else. That requires a framework. That requires a partner who understands both the technical reality and the business context, that is the work I do.

• The Head of Security Who Joined Into Chaos:

There is a particular experience that many Heads of Security at growth stage startups share and almost none of them talk about publicly, because talking about it feels like admitting inadequacy.

They joined with a mandate to build security. They arrived to find an environment that was more complex, more exposed, and less documented than the interview process suggested. They spent their first month trying to understand what existed before they could begin to assess what needed to change. They produced a gap analysis that was accurate and comprehensive and that sat in a shared drive while the business moved on to the next priority.

They are managing more than their team can reasonably handle. The vendor risk programme that should exist does not. The cloud security baseline that should be enforced is aspirational rather than operational. The Acceptable Use Policy that should cover AI tool usage was written before ChatGPT existed and has not been updated since.

They know what good looks like. They are doing their best. And they are doing it with less support, less budget, and less organisational bandwidth than the job actually requires. I write for this person because I understand the gap between the mandate and the reality, and because I believe that the right framework, communicated to leadership in the right language, can close that gap faster than most organisations expect.

The Engineering Team That Heard the Wrong Message:

One truth that most organisations do not want to say out loud: the engineering team's relationship with security is almost entirely a product of what leadership has actually rewarded, not what leadership has said it values.

You can say security is a priority in every all hands. You can put it in the company values. You can hire a Head of Security and announce it internally, but if the engineering team's performance reviews are built around velocity and feature delivery, if security findings in code reviews are treated as blockers rather than improvements, if the pressure to ship always outweighs the time to do it securely, then the message the engineering team receives is clear and consistent, regardless of what the slides say.

The organisations where engineering teams build with security in mind are not the ones with the most rules. They are the ones where leadership has made the business case for security in terms that engineers respect, where security is understood as a quality attribute of the product, not an external constraint imposed on it. Where a security finding in a pull request is treated with the same seriousness as a functional bug. Where the time to address security concerns is built into the sprint, not extracted from it as an afterthought.

Building that culture is a leadership and communication challenge as much as it is a technical one, and it is one of the most important investments a growing startup can make.

At What Point Does Everything Change

I want to answer this question precisely, because I think it matters.

There is not one trigger. There are five, and they tend to cluster around the same growth stage for the same structural reasons.

The first enterprise deal. Enterprise customers have procurement processes designed to surface exactly the gaps that startups accumulate during early stage building. A 200-question security questionnaire from a prospect you cannot afford to lose is one of the fastest ways a founder discovers that their security posture does not match the story they have been telling.

The Series A or B fundraise. Sophisticated investors conduct technical due diligence. The findings from that diligence, the cloud misconfigurations, the undocumented vendor relationships, the absence of a formal security programme, become part of the conversation about valuation and governance expectations. The founders who prepare for this have better conversations. The ones who do not spend the post close period remediating under observation.

The first regulated industry customer. The moment your product enters healthcare, financial services, or government procurement, the compliance frameworks that were optional become mandatory. HIPAA. PCI DSS. SOC 2. ISO 27001. The gap between where you are and where you need to be becomes visible in a way it was not before.

The first security incident. This one is the most common trigger and the most expensive. A vendor breach that surfaces your data. A misconfigured storage bucket discovered by a researcher. A phishing attack that reaches a system it should not have reached. The incident forces the conversation that should have happened six months earlier but now it happens under pressure, in public, with customers watching.

The first key security hire. Sometimes the trigger is internal. A Head of Security who joins, conducts an honest assessment, and puts a gap analysis in front of leadership that cannot be ignored. This is the best version of the trigger, because it happens before the external pressure arrives, and it gives the organisation time to respond deliberately rather than reactively.

Why This Stage Matters More Than Any Other

I want to be direct about something. I could work with organisations at any stage. Early stage companies where the architecture is still clean and security can be built in from the beginning. Enterprise organisations with mature security programmes that need evolution rather than construction.

I choose to focus on the growth stage, Series A through Series C, the organisations in the middle of the transition I have been describing, because this is where the decisions have the most leverage.

At this stage, the technical debt is real but not yet catastrophic. The compliance gaps are significant but not yet the subject of regulatory action. The vendor relationships are complex but not yet unmanageable. The AI governance problem is urgent but not yet the topic of a board crisis.

The investments made at this stage, in cloud security posture, in vendor risk management, in AI governance, in the culture and processes that sustain these things over time, pay forward in enterprise deals closed, audits passed, compliance certifications achieved, and the particular kind of organisational confidence that comes from knowing your infrastructure can hold the weight of the company you are becoming.

The investments not made at this stage compound differently. In incidents that happen later and cost more to recover from. In deals lost to competitors who can demonstrate a security posture you cannot. In the regulatory conversations that happen after the fact rather than in anticipation.

This is why I write the articles I write, in the depth I write them, for the specific audience I write them for. Because the work matters most here and because the people doing it, the founders, the CTOs, the Heads of Security, the engineering leads, deserve writing that understands their actual situation, not a simplified version of it.

An Invitation

If you have read this far, it is likely because something in this article described something you recognise.

Maybe it is your organisation or a conversation you have been trying to find the words for. Maybe it is the postponed security review, the weight of the early architectural decisions, the gap between the mandate and the resources.

Whatever brought you here, I want to extend an invitation.

Subscribe to this series. The next articles will go deeper into the specific challenges I have outlined here, the frameworks, the decisions, the conversations that change things. Each one will be written with the same specificity and the same commitment to treating you as someone who can handle the full picture, not a simplified version designed to protect you from discomfort.

And if you want to talk about what is happening inside your organisation specifically, if you want a conversation that goes beyond the article and into the particulars of your situation, you know where to find me.