Hawk EyeBACKUP

Hawk Eye Backup, encrypted and verified backup for Windows. Ready. Set. Flow.

A quick set it and forget it… that never forgets. Choose what matters once. Hawk Eye Backup keeps it, checks every byte it writes, and hands it back the moment you ask.

For Windows 10 and 11.

Hawk Eye Backup's home screen: Good evening, John. Your files are protected, with Back up now and three tiles: Manage the flow, Browse the vaults, View the activity log.
A notification: We're done here, John. All safe and sound. 3,880 files protected.

Three doors. Everything behind them.

Manage the flow, with files flowing along a path into a drive. Browse the vaults, with the vault dial turning and the moments fanning out. View the activity log, with a pulse running along the heartbeat.

Simple square pictures that wake up when you point at one. Files start flowing to the drive. The vault dial turns. The log's pulse runs.

Three steps. Then forget it.

A flow is one backup with a life of its own: its own files, its own place, its own password. Make as many as you like.

Ready.

Name it. Client archive. Photos to the NAS. Everything important. Each flow keeps its own files, in its own place, locked with its own password.

Your flows: Everything important, Photos to the NAS and Work documents, each with its own status, and a tile for a new flow.

Set.

Say what it's for. One touch on the light strip and it knows which kinds of file to keep.

Office files, PDFs, spreadsheets, notes and e-books. You can fine-tune it any time.

The new flow sheet rising from the bottom: files flow along a path into an open vault tagged Client archive, with a name field and the What's it for light strip.

Flow.

It's ready. Pick where it lives, lock it with its password, and walk away. From here on it runs itself.

Client archive is ready: the vault is sealed and the name tag carries a check mark.

Set it. Forget it.

Four circles hold everything a flow needs to know. Fill them in once. After that, you'll only open them out of curiosity.

What we keep

Folders, kinds of file, a size cap and your own rules. Only what's lit up goes in.

Where it lives

A second drive, a USB disk, the NAS. Encrypted before a single byte leaves your PC.

When it happens

After changes, hourly, every 6 hours, daily or weekly. Or let the Decision Maker pick the moment.

Security & performance

A quiet PC or small backups, your choice. Change the password whenever you like. Nothing gets re-encrypted.

A flow's hub: four circles, What, Where, When, and Security and performance, each with its status.

Does.Then verifies.Then does again.

Backing up Sealing Verifying Saved

Interrupted halfway? It picks up where it stopped. Nothing already sealed is done twice.

Does.

Only what changed gets read. It's cut into chunks, each chunk is kept once, squeezed, then sealed before it's written.

Then verifies.

Every pack is read straight back from the drive, past the cache, and matched byte for byte. A moment isn't saved until all of it checks out.

Then does again.

A pack that reads back wrong is written again. A backup that's interrupted carries on where it stopped. Anything missing goes in on the next run.

What's been happening: a backup at 62 percent, and the log, decrypted and checked for tampering.
The log. Every line sealed, opened only to show you, and checked for tampering.
File by file: the journal of each file in the backup and what happened to it.
File by file. What happened to every single one.

It notices. Before you do.

The Proactive Decision Maker finds the folders that matter to you, watches them, and backs up when you've been busy. Switched off for a while? It catches up on everything that changed in the meantime.

New folders worth keeping get protected on their own.

Your edits get a moment to settle, then they're saved.

Open files are copied from a shadow copy. If one is still locked, it names the app holding it.

It tells you what it's up to, in plain words, by name.

When it adds a folder, it says why: Rust project, 214 source files, edited 2 hours ago.

Have a look, John. Found 2 new folders worth keeping. Clients and rust-tools look important, so they're in your backup now. Quick one, John. Missing your backup drive. We haven't seen it for 2 days. Good evening, John. We're securing your files now, 42 percent, now backing up Documents. We're done here, John. All safe and sound.

Every moment. Ready to come back.

Each backup is a moment you can open. Pick one, take what you need, and put it back where it belongs.

Pick a moment.

Every backup, newest first, from every flow.

The vaults: six moments, each with Look inside and Bring back.

Look inside.

Everything as it was then. Tick what you want.

Inside a moment: the Documents folder as it was, with two items ticked.

Say where.

Where it came from, or somewhere new.

The bring back sheet: the vault opens toward a new folder, D:\Restore, with light strips for where to and what to do if a file is already there.

Watch it come home.

Every chunk is checked before a byte is written.

Bringing your files back: files stream from the vault to their folders, 42 percent.

All back.

Where they belong, with a check to prove it.

All back where they belong: the folders light up with a check mark.

Already there? Your call.

If a file you're bringing back is already in its place, you decide what happens. Keeping both is the default, so nothing is ever lost by accident.

We'll put ours next to it, named "(restored)", so nothing gets lost.

The bring back sheet: files arc from the vault back to their own folders, with Where they came from and Keep both lit on the light strips.

Peek. Compare. Bring it back.

Every backup keeps a version of every file that changed. Open any of them right inside the app, see exactly what's different, and put the one you want back.

BeforeOct 10, 21:10
AfterOct 11, 21:00

1Q3 Client Report

1Q3 Client Report

2Prepared for Northwind Holdings by Hawk Eye Analysis Ltd.

3Summary

2Summary

4Endpoint coverage reached 94% across 212 devices.

3Endpoint coverage reached 98% across 230 devices.

5Three critical alerts were investigated and closed.

4Four critical alerts were investigated; all were closed within 4 hours.

6No data loss was recorded this quarter.

5No data loss was recorded this quarter.

6A ransomware recovery drill restored every site from backup in under an hour.

7Recommendations

7Recommendations

8Rotate the backup password every quarter.

8Keep an offsite copy of the encrypted backup.

9Next review: 15 October 2026.

9Next review: 14 January 2027.

Peek.

Word, Excel and PowerPoint (the old formats too), PDF, web pages, Markdown, CSV, code and plain text open inside the app. See the words, the title, the size and the word count without bringing anything back first.

Compare.

Pick a document and any two moments. Every changed, added and removed line sits side by side, highlighted, with the count of changes on top.

Bring it back.

Found the one you wanted? Bring back Before, and it comes home next to today's copy as "(restored)". Nothing is overwritten unless you say so.

See what changed in the app: Q3 Client Report in two moments, side by side, with the changes highlighted and a Bring back Before button.
The real thing, in the app. It all happens on your PC.

Luxurious.
Inspired.
Alive.

Designed to be a pleasure to open. Buttons glazed like porcelain, warm light on whatever matters next, and pictures that breathe. Three looks to wear it in, and every Hawk Eye app on your PC follows the one you choose.

OrbitUX Live: the home screen in deep space with a starfield.

OrbitUX Live

Deep space. A still starfield, progress drawn as constellations, colours that glow.

CleanOrbit Dusk: the home screen in a pastel dark.

CleanOrbit Dusk

A pastel evening, with vivid colour that pops.

CleanOrbit Light: the home screen in warm cream.

CleanOrbit Light

Warm cream and soft pastels, like good paper in daylight.

It rises.

Every task arrives on a sheet that glides up from below and hushes the rest of the screen. Each plays its own little scene, right through to the final flourish.

It answers.

Choices sit on light strips, like the dial of a beautifully made machine. Touch one and its lamp comes on.

It glows.

Porcelain buttons with just enough depth. The one to press next gives off a soft, warm light, so you never have to look for it.

Locked. Sealed. Yours.

Your password is never written down. Not on your PC, not on the drive. Without it, a backup is just noise.

Sealed before it leaves

Every piece of every file is encrypted on your PC, before it goes anywhere near the drive.

A password nobody keeps

Not on your PC, not on the drive, not with us. Change it whenever you like, in a moment.

Proof on every read

Each piece is checked as it comes back, on every restore, so nothing damaged or swapped slips through.

Open files too

Files you're still working in are backed up anyway, from a snapshot Windows takes for us.

A quiet PC or small backups. You set the balance.

Effort on your PCBarely there
Backup sizeRoomiest

Hardly touches your PC while it works. Backups take a little more room.

Security and performance: the compression slider from Light to Max, its two meters, smart squeezing, and the password.

The boring specifics.

For anyone who reads the back of the box. Everything above, in the words engineers use.

Built with

Language
Rust 1.97, 2024 edition, compiled to native machine code. No runtime, no garbage collector.
Interface
Slint 1.18, compiled ahead of time into native code with the app. No web view, no browser inside.
Notifications
Direct2D and DirectWrite on Direct3D 11, composited with DirectComposition, so the corners are truly transparent.
Runs on
Windows 10 and 11, 64-bit.

Encryption

Your data
XChaCha20-Poly1305, with a fresh random 24-byte nonce for every chunk.
Your password
Argon2id at 256 MiB, 3 passes, 4 lanes. It unwraps the master key and is never stored.
App and service
Noise NK (25519, ChaChaPoly, BLAKE2s), with the service's key pinned.

Integrity

Chunk IDs
Keyed BLAKE3, recomputed and checked on every read.
Write check
Every pack is read back uncached and compared before anything depends on it. Up to 3 rewrites, then the job stops and says so.
Publishing
A moment is re-read and checked end to end before it appears in the vaults.

Storage

Deduplication
FastCDC content-defined chunking with a keyed gear table.
Compression
zstd at levels 1, 3, 9 and 19. Already-compressed files (photos, video, archives) are stored as they are.
Index and journal
redb: transactional and crash-safe. An interrupted backup resumes from its journal.

On your PC

Files in use
Volume Shadow Copy, with Restart Manager naming any app that still holds a file.
Catching up
The NTFS change journal, read forward when the service starts.
Logs
Every record sealed and tamper-evident, kept for 14 days.
Previews
Documents are opened by the app, never by the background service, each in a guarded reader with a 48 MB limit.

Set it.
Forget it.
Get it back.