Vincent Grün · Vienna, Austria
I help small firms keep their data in their own building.
Grün.Support works with law firms, accountancies, group medical practices, property managers and trade businesses (plumbing, electrical, building services) in Vienna — organisations of roughly 3 to 25 people that handle other people's confidential data, or hold keys and remote access to their customers' buildings and equipment, and have no IT department of their own. Files and backup move onto a server in their own offices; email and calendar move to a European provider whose contract is in their name; AI runs where the data is allowed to be.
This page is the complete English version of the offer. The German site carries more detail per service, plus a free three-minute self-test. Zur deutschen Website
Who it is for
Firms that answer for other people's data.
Big enough to have real IT problems, too small for an IT department. The typical client has 3 to 25 staff and is legally on the hook for information that belongs to someone else.
- You process client, patient or tenant data under professional secrecy or heightened data-protection duties — or, as a trade business, you hold keys, access codes and remote-maintenance logins to your customers' equipment.
- That data currently sits spread across providers you do not control — grown over years, never actually decided.
- Documents leave the office as email attachments because there is no better route.
- IT is looked after on the side: by the partner, the office manager, or whoever on the team is good with computers.
- You want plain advice and hands-on implementation, not a consultancy deck.
Typical starting point
Does any of this sound familiar?
None of it is a personal failure. Small firms go digital one step at a time — and at some point the most confidential files in the building sit on systems nobody in the building decides about.
Documents by email
Confidential files go out as attachments because the secure route does not exist.
Nobody knows where the data is
Several cloud services, local folders, old machines — no overall picture.
Licence costs keep climbing
The bill grows every year and there is no way to say no.
Untested backups
Backups may exist, but nothing has ever been restored from them.
Unclear access
Passwords and admin logins are not properly managed — including when someone leaves.
No way out
Switching provider is theoretically possible; in practice nobody knows how.
It all hangs on one person
Critical knowledge lives in one head — inside the firm or outside it.
No documentation
There is no file with which a third party could take over.
None of these has to be fixed today. But it is worth knowing which ones actually matter in your firm — and what getting out would cost in each case.
What I do
Two core services, in this order
First the overview, then the migration — in that order, because a fixed price without an understood starting point is not a fixed price. Implementation uses one fixed, open-source toolkit.
Sovereignty check
A structured review of the existing IT: systems, access, backups, devices and workflows are recorded and rated in plain language. For every system holding business data I answer the same questions — where does the data physically sit, who is the contracting party, who could legally access it, is there a complete export, and what would leaving actually cost? It ends with a prioritised action list.
- Short report in plain language
- Dependency rating per system
- Specialist software and device inventory
- Risk list without scaremongering
- Prioritised action list
- Quick wins to start with
Migration
Files and backup move onto a small server in your own offices. Email, calendar and contacts move to a European provider whose contract is in your name. Your specialist software stays exactly where it is. Fixed scope, fixed price — and at the end you receive a handover file with which any other provider could take over.
- Server in the building for files and backup
- Secure document exchange instead of email attachments
- Email and calendar with an EU provider
- Encrypted second copy off site
- All access and contracts in your name
- Handover file for the day it is needed
Ongoing IT support
Regular support for firms without an IT department: system checks, update and backup monitoring, tested restores, and a named contact for IT questions — with a clearly defined scope and no flat-rate promises nobody can keep.
AI workshop
Where AI genuinely helps in daily work — and which documents must never go into someone else's model. For firms under professional secrecy that is not an academic question. Wherever possible with open models on your own hardware, so confidential text never leaves the building.
See the AI workshopAI
Using AI without your data leaking out.
A hands-on workshop for small teams: find the use cases that are actually worth it, judge the risks, and agree simple rules for everyday work. For a firm under professional secrecy the decisive question is not what AI can do, but which texts must never go into someone else's model — and what can run on your own hardware instead.
A client brief pasted into an external service for summarising has left the building, whatever the terms of use say. That is why local, open-source models are a fixed part of the workshop rather than a footnote. No prior knowledge is required; the workshop starts wherever the team actually is.
What we do
It is a working session, not a lecture. I run it and work directly with your team:
- Explain the fundamentals in plain language — what these tools can do, what they cannot, and why
- Collect real tasks from your firm — drafting, summarising, templates, internal organisation
- Rate every use case — by benefit, risk and effort
- Decide local or external — for which tasks an open-source model on your own hardware is enough (for example via Ollama), and where a large external service is genuinely needed
- Draft simple AI rules — what is allowed, what is not, what to watch out for
- Write example prompts for recurring tasks that your team can use straight away
- Recommend the next steps — honestly, including "a checklist is enough here, this needs no AI"
Data protection is the starting point, not an afterthought: we go through which documents may go into which tool, and which may not. For many everyday tasks — summarising, rewriting, sorting — a model running on your own hardware that sends nothing outside is simply enough.
What you take away
Your team leaves with documents, not with a good feeling:
- a workshop summary
- a list of worthwhile AI use cases for your firm
- a first risk assessment, in plain language
- a "local or external" verdict — which tasks can stay in the building, and what that would take
- a draft set of simple AI guidelines for internal use
- example prompts for your recurring tasks
- an action list with the next steps
Format
Short pre-call
We clarify your main questions and expectations.
Preparation
I adapt the workshop to your firm and its actual tasks.
Workshop
Roughly 3–4 hours, on site or remote, with 2 to 6 participants. Can be run in English or German.
Rules and prompts
Written during the session, on your real examples.
Summary
You receive the results and the action list afterwards.
What it is not
- It is orientation and joint work, not a technical rollout. Setting up tools, local models or automations can be commissioned separately afterwards.
- It replaces neither legal advice nor a full GDPR audit.
- The AI guidelines produced are a working draft, not a finished company policy.
- Ongoing support and follow-up training are not included, but can be arranged.
Workshop package Fixed price after the pre-call
The price depends on scope, number of participants and preparation — a compact short workshop costs less than a half or full day with deeper follow-up. You get a clear offer with a fixed price beforehand, covering preparation, delivery, summary and action list, with no hidden extras.
And an honest promise: if the workshop shows that AI is the wrong tool for a task, I say so.
Principle
What belongs in the building — and what does not
Sovereignty does not mean running everything yourself. It means you control your data and can leave any provider at any time. That is why the line always runs in the same place.
Files, backup, passwords
Anything confidential, large, or needed when the internet is down sits on a server in your own offices.
- Your files sit on a machine you can point at
- No provider can change prices, terms or features underneath you
- Encrypted second copy off site — you keep the key
Email, calendar, video
Anything that needs uptime, spam filtering and deliverability belongs with a professional provider — not on an office server, and not with me. Self-hosted email is explicitly ruled out.
- Contract, domain and invoice are in your name
- Provider inside EU jurisdiction, with a data-processing agreement
- If someone is unavailable, the provider is your counterpart — not me alone
Toolkit
What I build with
Exactly one standard tool per job — no menu of options. That is precisely why fixed prices are possible, and precisely why someone else can take over.
Files & collaboration
Server & storage
Backup
Email & calendar
Passwords & access
Secure remote access
Local AI
One thing I do not promise: a Microsoft-free office. Legal, tax, medical, property-management and trade software in Austria runs on Windows, usually alongside dictation systems, card readers and specialist scanners — I do not touch that. The promise is that the data stays in your building, not that the vendor list is pure.
The most important difference
You can replace me at any time.
A migration that leaves you dependent on me instead of on a large vendor is not progress — it is a swap. So replaceability here is part of the service, not a concession.
- All access belongs to you. Admin passwords, licences and contracts live in your password manager and are in your name, not mine.
- The build is standard, not handcrafted. Well-known, widely used tools instead of bespoke work only I understand.
- You get a handover file. Systems, access, contracts, procedures and recovery — written for an unfamiliar provider, not for me.
- The backups are yours. Including the key to the encrypted off-site copy.
Way of working
Six steps, always in this order
Good decisions need an overview first, and solutions without documentation only create the next dependency.
Understand
First we establish how your firm works and where the real problems are. Not every technical oddity matters in daily work.
Map
Systems, access, data and procedures are made visible — including who owns them and what switching would cost.
Prioritise
Not everything matters equally. The biggest risks and the easiest improvements come first.
Implement
The migration runs in small steps, to a fixed build, without stopping the business. Your specialist software is left untouched.
Document
It ends with the handover file. It belongs to you and is written so an unfamiliar provider can work from it.
Explain
You should understand what you need to know day to day — without jargon and without a new dependency.
Background
One person, personally accountable
Vincent Grün, Grün.Support
Grün.Support is run personally by Vincent Grün. No call centre, no rotating account managers, no agency "we" standing in for one person.
You talk to someone who knows your firm and does not hide technology behind jargon — and who shows you from the start how to get rid of him.
References
What clients say
Quotes translated from the German original.
With Vincent's help I took my entire IT infrastructure into my own hands. I now work independently of the big software and cloud providers and have full control over my data and services.
Stefan Yazzie Herbert, video production and direction, Vienna
Vincent restructured our IT infrastructure from the ground up. Everything in our office runs perfectly and our data is secure.
Knud Nielsen, architect, Vienna
Vincent spotted and fixed IT problems in my daily work that I would never have suspected. My work is more pleasant now — I save time and a lot of nerves.
H. Seidl, manager, Vienna
Sensible first steps
Three routes, depending on where you stand
Overview
You do not know where your data sits
The sovereignty check records your IT in a structured way and rates every system by who owns the data and what switching would cost. It commits you to nothing further — you then decide what to implement, and with whom.
Ask about the sovereignty checkMigration
You already know you want out
If the starting point is clear, it goes straight to the migration: files and backup into your own building, email and calendar to a European provider. Fixed scope, fixed price, handover file included.
Ask about the migrationAI
Your team is already using AI tools
If people are trying tools on their own and there are no rules yet, the workshop is the fastest way to a shared line: which tasks, which tools, which documents never — and what a local model on your own hardware could take over.
Ask about the AI workshopAt home
IT support at home
The same way of working as for firms, only smaller — for private households and for people who work alone from home. Fixed prices, said in advance. All prices below include VAT: that is the figure on the invoice. Travel within Vienna is included; outside Vienna a single 39 € travel fee applies.
Migration
Out of Big Tech
from 490 € incl. VAT
Photos and documents move off Google Drive, iCloud or OneDrive onto a network drive in your own home that is backed up automatically. Passwords go into a password manager you operate yourself. Your old accounts stay until everything has demonstrably arrived — nothing is deleted until you say so.
Ask about the migrationGroundwork
Backup and devices in order
from 290 € incl. VAT
An automatic backup is set up — and restored once together, because only then do you know it works. Plus updates switched on, disk encryption enabled, accounts and passwords tidied, old devices signed out properly. You end up with one page of paper saying what sits where.
Ask about the groundworkSingle visit
One-off help
150 € incl. VAT
One appointment at your home for whatever is not working: computer, printer, Wi-Fi, moving to a new phone, setting up a new device. Up to 90 minutes on site are included. If it turns into more, I say so before the time runs out — not afterwards. If a device is broken, I look at it and quote the repair before carrying it out.
Ask about a visitRepairs are quoted before they are carried out, spare parts billed separately. What I do not do at home: data recovery from physically damaged disks, gaming builds, and there is no out-of-hours emergency service. For contracts concluded away from my business premises you have a 14-day right of withdrawal; if you expressly ask me to start within that period, you pay for the part already performed should you withdraw later. Die deutsche Fassung dieser Seite
Contact
Let us establish where your data actually sits.
Write a few lines about your organisation, where your data sits today and what bothers you. I reply with an assessment of the sensible next step — including when that step does not involve me.
Easiest via the form, or directly by email. No booking tool, no obligation. Correspondence, workshops and meetings in English or German.
Working in German? Zur deutschen Website