Website Security for UK Self-Storage and Secure Storage Companies

Why Storage Company Data Has Physical Security Implications

Self-storage operators collect a type of data with an unusual dual risk: the data they hold online can compromise physical security at their facilities. Customer accounts contain unit access codes, gate entry PINs, and site access credentials. If a customer account is compromised, the attacker knows not only where the customer stores their possessions but potentially how to access the facility without triggering an alarm.

The combination of home address, unit number, access credentials, and stored contents (sometimes declared in insurance documents) creates a profile that is directly actionable for burglary.

What Storage Company Websites and Portals Hold

**Customer account data** — Names, home addresses, email addresses, and phone numbers for every registered customer.

**Unit access and facility credentials** — Gate codes, door PINs, and unit numbers linked to customer accounts. Some portals display these credentials directly after authentication.

**Direct debit and payment card data** — Ongoing rental relationships typically involve stored payment methods — either direct debit mandates or card tokens for recurring charges.

**Contents declarations for insurance** — Insurance documentation sometimes requires customers to declare the nature and approximate value of stored contents. This data, combined with unit number and access credentials, describes exactly what is in a specific unit and how to access it.

**Facility-level security information** — Internal staff systems that manage CCTV access, alarm codes, and site layout are operational security data that must be protected separately from customer-facing portals.

Common Security Vulnerabilities

**Unit access credentials in customer portals** — Portals that display gate codes and unit access information must be robustly secured. An IDOR vulnerability — where incrementing a customer ID exposes another customer's unit and credentials — is a specific risk in this sector.

**Weak authentication on customer accounts** — Accounts that contain access codes need multi-factor authentication. A credential stuffing attack that compromises a storage account gives an attacker everything needed to access the physical unit.

**Phishing targeting payment updates** — Storage customers receiving emails about payment failures or rate reviews are targeted by phishing attacks that capture payment card details through fake update pages.

**Inadequate session management** — Portals that maintain sessions beyond reasonable timeout periods create risk on shared devices and in customer-facing kiosk environments.

**Outdated facility management software with web interfaces** — Storage facility management systems, often older software, may not have received security updates and may have known vulnerabilities.

Practical Steps for Storage Operators

Require multi-factor authentication for all customer accounts. Never display full access codes to an unauthenticated session. Implement per-request authentication for any action that reveals physical security information. Conduct regular security scans of customer-facing portals. Apply updates to all web-facing systems monthly.

Yrzo AI scans storage company websites and customer portals to identify authentication weaknesses, credential exposure risks, and payment security vulnerabilities before they enable a physical or data security incident.