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Security for sensitive data at the points where it is exposed.

Casewelt governs how sensitive files are stored and shared. Trustwelt secures the computers your people work on, from the sign-in to what leaves the machine. SialFlow delivers images, video and documents through a policy-enforced path.

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Three products, one rule: check first, then record Casewelt shares a board pack to a named auditor and records the open. Trustwelt allows a known person on an enrolled computer and fills a company login without showing it. SialFlow serves a catalogue image through a signed URL after a policy check. Casewelt Casewelt Board pack · v4 to auditor@firm.example · 14 days Named share Opened by the auditor version pinned · recorded Trustwelt Trustwelt d.ozer · MacBook-A12 password + MFA · enrolled Person · device · state Session allowed company login filled, never shown SialFlow SialFlow hero-01.jpg → 1200w WebP catalogue request · project scope Policy · quota Served via signed URL transform run · job recorded Checked before anything happens. Every outcome, allowed or refused, is on record. Three checks passed. The file opens, the session starts, the image is served. All three on record.
UKRegistered company, England & Wales, No. 13552665
In-houseDesigned, built and run by our own team
PublishedVault source code, file format and threat model are public
Your keysSecrets and storage stay on your side of the boundary

Products

Three products, each with one clear job

Start with the problem in front of you: a file that must not leak, a computer you cannot fully trust, or media that must reach the right place.

Casewelt · Secure file sharing and storage

Share a sensitive file with exactly the right people, and prove it later.

Casewelt is where your team keeps and works on sensitive documents. Send a file to a named person with an expiry date and a download limit, pull it back when you need to, and keep retention and legal hold attached to the file itself. When someone asks who opened which version, the answer is a search.

  • Send files to named people, with expiry and revoke
  • Retention and legal hold stay on the file
  • Every version encrypted, every open recorded

A typical use

The board pack goes to two external auditors for a fortnight, pinned to one version. They see that file and nothing else.

Casewelt overview Visit casewelt.com →
  1. Sensitive file
  2. Named people, expiry
  3. Opened
  4. On record
Casewelt audit view listing who opened which file version
Casewelt files console with versions and legal hold

Trustwelt · Endpoint security platform

Identity is not enough.

Trustwelt makes the computers your people work on trustworthy. Set up once, it applies your rules in every browser and application, lets staff use company logins without ever seeing the password, checks what leaves the computer on the computer, and decides access from the person, the machine and its current state.

  • Six products, one console: Vault, Web Protection, DLP, Secure MailGW, Endpoint, AI Security
  • Company logins and cards used, never shown
  • Files, mail and AI inputs checked on the computer; no password in our cloud

A typical use

A customer list is pasted into an AI chat. It is held on the computer, checked against your policy, and a masked version goes. The original never leaves.

Trustwelt overview Visit trustwelt.com →
  1. Password and MFA
  2. Enrolled computer
  3. Current state
  4. Session allowed
Trustwelt Tenant Admin overview: key figures, each protection module's events over 30 days, and the most blocked sites

SialFlow · Secure media and document delivery

Deliver images, video and documents without leaving the door open.

SialFlow sits between your storage and the people and systems that receive your media. Each request is checked against your rules and limits before any work is done. Images are resized and reformatted on the fly and served through signed links, heavier video and document jobs run in the background, and every job keeps a record of what went in and what came out.

  • Rules and limits checked before anything is produced
  • Signed links instead of open URLs
  • A record of every job, for later questions

A typical use

A product catalogue keeps its master images in your own storage. Each sales channel gets the right size and format through a signed link, and you can see which job produced it.

SialFlow overview Visit sialflow.com →
  1. Request
  2. Policy and quota
  3. Transform
  4. Signed URL, on record
SialFlow platform overview
api.sialflow.com · background job
POST /v1/images/{id}/bg-remove
→ 202 job queued · status, retries and output kept on record

How they fit together

One ordinary day, three moments that matter

Most security incidents are not exotic. Someone signs in, a file goes out, something gets published. Each product covers one of those moments, and each keeps its own record of what happened.

  1. 09:10

    Someone signs in

    Trustwelt checks that it is a known person on an enrolled, healthy computer before the session is allowed. A right password from an unknown machine is still refused, and the company login is filled without being shown.

    TrustweltPerson, enrolled computer, current stateSession allowed

  2. 10:30

    A board pack goes to the auditors

    Casewelt sends it to two named people, pinned to one version, expiring in fourteen days. They never see the rest of the workspace, and the share can be pulled back at any time.

    CaseweltTwo named people, one version, fourteen daysShare sent, revocable

  3. 14:00

    The product catalogue updates

    SialFlow checks each request against your rules, resizes the images and serves them through signed links. Nothing is produced for a request that fails the check.

    SialFlowPolicy and quota checked, image transformedServed via signed URL

  4. Later

    Someone asks who saw what

    Each product keeps its own record: which computer signed in and what left it, who opened which version, which job produced which file. The answer is a query, not a hunt through inboxes.

    RecordsWhich computer, which version, which jobOne query

Why SIAL Networks

What you can count on

One team, start to finish

The people who design these products also run them day to day. When you ask a question, you get an answer from someone who knows how the system behaves in production.

Claims backed by evidence

Trustwelt publishes its capability matrix, its cryptography and the source of its vault. Casewelt and SialFlow document their APIs. We do not publish certifications, audits or customer logos we cannot show evidence for.

A UK company you can look up

SIAL Networks Limited, company number 13552665, registered in England and Wales. Registered office and correspondence addresses are on the About page and at Companies House.

FAQ

Common questions

What does SIAL Networks make?

Three security products. Casewelt for sharing and storing sensitive files, Trustwelt for securing the computers your people work on, and SialFlow for delivering images, video and documents safely.

Do we have to buy all three?

No. Each product is used on its own, with its own site, account and documentation. Many teams start with one. They are built by the same people, so using more than one feels familiar.

How do we start with a product?

Casewelt and SialFlow start from their own sites, with documentation and a workspace or project. Trustwelt organisations start with a conversation: tell us which problem comes first and we set you up with that product. Individuals can use Vault Lite on their own computer without an account.

Can we see a product on our own workflow before committing?

Yes. Tell us which product you are interested in and one thing you want it to do, and we will show you that on the real product, on sample data. We normally reply within one business day.

Who is behind the products?

SIAL Networks Limited, a UK company registered in England and Wales, company number 13552665. The team that designs the products also runs them. Registered office and correspondence addresses are on the About page.

Next step

See it on your own workflow.

Name the product and the problem. We will demonstrate it on the live system and reply within one business day.

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