Heelr Blog

Practical guides on cybersecurity leadership, compliance, and building a resilient security function.

Cybersecurity leadership

vCISO vs Full-time CISO: A Practical Comparison

Compare virtual CISO services with a full-time CISO. Learn costs, benefits, and when fractional security leadership makes sense.

Customer security reviews

How to Complete a Customer Security Questionnaire

Why customers send security questionnaires, what they ask about, who should contribute, what evidence to prepare, and how to handle the gaps.

Compliance frameworks

SOC 2 vs ISO 27001: Which Does Your Business Need?

How the two frameworks differ, what each one produces, what to clarify when a customer asks for one, and how to work out which route is relevant to your business.

Startups

What Security Do Enterprise Customers Expect From Startups?

What enterprise customers may ask a startup for, why requirements vary so much between customers, the evidence that tends to be requested, and what to prioritise when security enters a live deal.

BUILDING WITH AI

I Built My App With AI. What Security Do I Need?

How to recognise when an AI-assisted prototype has become a real product, which areas are worth examining, and what kind of security review may be appropriate.

CUSTOMER SECURITY REVIEWS

A Customer Asked for a Security Review. What Happens Next?

What a customer security review usually means, why customers ask, what the process can involve, and how a smaller company should think about responding.

INCIDENT RESPONSE

We Think We've Had a Security Breach. Who Do We Need to Call?

Who may need to be involved when a company suspects a breach, what incident response and digital forensics actually cover, and how to work out which expertise is relevant.

FAMILY OFFICES

What Cybersecurity Support Does a Family Office Actually Need?

Why family office security often looks different from an ordinary company, where the risk actually sits, and which kinds of expertise may be relevant.

BUYING CYBERSECURITY

Why Generic Freelance Platforms Fall Short for Cybersecurity

Why a profile, rate and star rating rarely give a buyer enough to judge security expertise, and what context actually helps when choosing a provider.