Trust

Everything we hold,
and everything we do not.

Most vendors put a row of certification logos on this page and hope nobody checks the scope on them. We would rather publish the whole list, including the four lines where the honest answer today is no. If any of those four is a blocker for you, it is better that you find out here than in month two.

Read the status list Where our data would sit Last reviewed 4 August 2026
Status

The list, with nothing taken out of it.

Four states, and they mean what they say. By design is a property of how we build, not a policy we wrote down. Scheduled carries a date. Not held means not held, with no adjective in front of it.

Data residency
By design
The stand, its databases and its backups sit in the European Union: during the build on our stand in Germany, after acceptance and full payment on your infrastructure, wherever you choose to put it. Access from outside the EU is limited to the subprocessors listed below.
Per person access
By design
No shared logins and no shared password. Six roles, enforced in the database rather than only in the interface, so a direct query obeys them too.
Audit trail
By design
Accounting entries are hash chained. An altered figure is detectable rather than arguable, and lock dates stop a closed period being rewritten.
Change control
By design
Nothing reaches production except through a reviewed change with more than 3,500 automated checks green. Every deploy records the commit it published, and rolling back is that commit redeployed by the same script.
Encryption in transit
In transit only
TLS 1.3 everywhere, and secrets in environment files readable only by root, never in the repository. Full-disk encryption on the hosts is not in place: our provider does not offer it on these machines and we have not built it ourselves, so we say so here rather than let the row imply it.
Backups, verified daily
Partly
Daily, offsite, thirty day retention, and every dump is read back by the tool that would restore it before the run counts as done. A scheduled full restore rehearsal is not yet in place, and until it is, this row says so: a backup nobody has restored is a rumour, and we would rather name ours than round it up.
GDPR data processing agreement
Held
Signed with the contract, as its Annex C. Before that, the probe runs under the mutual NDA and its personal data terms. Standard contractual clauses where a subprocessor needs them.
Incident response procedure
Held
Named on call person, notification to you without undue delay and at the latest within 48 hours of becoming aware of a breach affecting your data, and a written post mortem inside five working days.
Security fixes
Held
Free for the delivered foundation for at least five years from delivery, whether or not you pay for anything else.
Third party penetration test
Planned
Planned against the reference build, not done yet. When it is done, the summary will be published on this page with its date, whatever it says.
Core source escrow
Scheduled
The source of the foundation’s core is deposited in escrow after each delivery. It is released to you on death or incapacity with no successor, insolvency, a failed transfer of the contract, 12 months without a core update while you pay for updates, or a security fix not supplied within 30 days of your notice.
ISO 27001
Not held
We are a small engineering company and we have not certified. We will start the process when a client contract requires it, and this line will say so until we have the certificate in hand.
SOC 2 Type II
Not held
Not held and not planned. It is a North American procurement instrument and none of our clients have asked for it. If yours does, tell us early, because it is a year of work.
24/7 monitored SOC
Not held
We run health checks and alerting, not a staffed security operations centre. After handover this is your responsibility on your infrastructure, and we say so in the runbook.
Cyber liability insurance
Scheduled
Being placed for the 2026 to 2027 year. Certificate available to clients once bound.
Your data

Three phases, and in the third one we hold none of your data.

During the build your data sits on our stand under the DPA. After delivery it sits only on your infrastructure, and our access is limited to named accounts you can revoke.

Phase 1 · weeks 1 to 3

While we build

Before you sign, we read your live systems under the mutual NDA to write the scope. Then we build on a stand on our infrastructure that your people sign into.

Where
Hetzner, Germany. If your data cannot leave your premises, containers on your server instead
What
Structure and volumes, plus a working copy of your data
Who
Named engineers and your named users, listed in the DPA
Phase 2 · months 1 to 6

While we run it with you

After acceptance and full payment it moves to your server. We hold time boxed access to run it, apply updates and support your person.

Where
Your infrastructure
What
Nothing of yours on ours, except logs you can see
Who
Named accounts, revocable by you at any moment
Phase 3 · after handover

After we leave

Access is removed on the date you set in the contract. Certification is signed by both sides and lists every account closed.

Where
Yours alone
What
Nothing
Who
Nobody at a-systems

After handover your data is not on our infrastructure at all. No vendor that hosts your data for a subscription can write that sentence.

Controls

What actually prevents the incident.

Policies do not stop breaches, mechanisms do. These are the ones that sit in the code and in the pipeline, where they cannot be forgotten under a deadline.

The merge gate

Nobody can push straight to the main branch, including us. A change enters through review with lint, types, schema, the full suite and the build all green, or it does not enter.

3,500+ checks · enforced by the platform, not by discipline

Tests that can actually fail

Money, tax and stock logic is written test first. We also check the suite can go red: a green build that is structurally incapable of failing is worse than no build, because it is trusted.

Domain invariants covered, not endpoints

Every deploy records what it shipped

The deploy script writes the exact commit it published and reads it back on the next run, so what is running is answerable without opening a shell. Rolling back is that commit redeployed by the same script. A release that the project's own roadmap does not call shipped stops the deploy until somebody names it.

Releases through one script, never typed by hand on the server

Roles in the database

Row level security means a role restriction holds even for a direct query, not only for a screen. A read only user is read only to Postgres itself.

6 roles · every write attributable to a name

Integrations run in sandbox by default

Every external system has a real mode and a mock mode, and a new environment starts in mock. Loading your real customer addresses cannot accidentally email or ship to them.

Channels default to off until you open them

Secrets never enter the repository

Credentials live in environment configuration on the host with restricted permissions. The repository records where a secret lives, never what it is.

Scanned on every change
Subprocessors

Everyone who could touch it.

The list applies to the build phase. After handover you choose your own, and this table stops being about you.

ProviderPurposeRegionHolds your business data
Hetzner OnlineCompute and storage for the build environmentGermanyYes
Google WorkspaceThe alex@a-systems.pro mailbox, where contact mail and scope reads arriveGlobalWhat you send us by mail or at /start/
ResendTransactional email from the systemEU routingAddresses only
GitHubSource control and the merge gateEU / USNo, code only
AnthropicWriting and testing code, and reading the text sent to the scope read at /start/USAs the purpose states

On the last row: the model is Anthropic’s Claude. It writes and tests the code, and it reads the requirements you send through the scope read at /start/, which are deleted after 30 days. If your policy restricts the use of AI tools, say so at the first call.

Shared responsibility

What we sign, and what we need from you.

Handing you the keys means some of this genuinely becomes yours. Better to name which parts now than to discover it during an incident.

Ours

  • Mutual NDA, signed before we look at your systems - sign it here, it takes a minute and our signature is already on it; the GDPR processing agreement is signed with the contract
  • The build environment, its patching and its access list
  • The controls above, delivered inside the system rather than promised around it
  • A runbook written for someone who has never met us
  • Notification within 48 hours of becoming aware of a breach, and a written post mortem inside five days
  • Every account we hold, listed by name, closed on the date you set

Yours, from handover

  • Server patching and operating system updates
  • Who has an account, and removing people when they leave
  • Watching the health alert, which we point at your address before we go
  • Restoring from backup if it comes to that, which you will have rehearsed with us
  • Reviewing what your own AI agent proposes before it merges
  • Deciding whether to keep the monthly or the updates-only plan, either of which keeps updates arriving; security fixes to the delivered foundation stay free for at least five years either way

Agreements are signed with Oleksandr Azariyev under the a-systems brand until the company is incorporated, and then pass to it.

Send this page
to your worst sceptic.

Preferably the person who has been burned by a vendor before. If they come back with a question this page does not answer, that question belongs on it, and we will add it.

Sign the mutual NDA Book a technical review Answered by the engineer, not a desk. The NDA takes a minute and is already signed on our side; the GDPR processing agreement is signed with the contract, and the draft comes at the call or by writing to alex@a-systems.pro.

Which business should the demo be?

Two are open now. Invented data, rebuilt every few hours, no call and no card.

Service, clinic groups and schools follow, on the same foundation.