Stop attachment fraud
before a hacker ever gets the chance to change a file.
Adlerwacht confirms every recipient with a device check plus a one-time text message — a phone number your company already has, sent over a channel a hacked inbox can't reach — before any attachment unlocks. That's what helps stop a file from being swapped, redirected, or silently altered in transit. No IT rollout, no changes to your existing mail setup. Protects your company, and the customers and suppliers you send documents to, from the same fraudulent-attachment attacks either side could otherwise fall victim to.
Retrieval code: A3B9-KF2R-9XM1
No file attached. Nothing here a hacker could ever touch.
See it for yourself
What Adlerwacht actually does, in 90 seconds
A quick look at what changes for your team (nothing) and what changes for your recipients (one quick check, once).
The 90-second overview
How an attachment moves from your outbox to a verified recipient, without ever sitting exposed in an inbox.
The real cost of doing nothing
This is how a business loses six figures in one afternoon.
Not a hypothetical — this is the exact pattern behind the most common, and most expensive, email scam hitting small businesses right now.
A password leaks
Not necessarily anyone's fault — often just a password reused from an unrelated website breach years earlier, or one typed in on hotel WiFi that wasn't as private as it looked.
A hacker reads the mailbox quietly
No warning sign. They just watch — learning who pays whom, and when the next invoice is due.
One number gets changed
The real invoice arrives, or is intercepted, with the bank account number swapped. Same thread, same sender, same file name — everything looks right.
The money is gone — for good
It's paid on time, exactly as trained. By the time anyone notices, the money has already moved through half a dozen more accounts, and it is not coming back.
Do the math
From €79 a month. Or a €100,000 mistake.
Real businesses have wired six-figure sums to a hacker's bank account over one changed number in one PDF. This is roughly what plans start at to help make sure that doesn't happen to you.
What protection starts at
/ month — see all plans
What one mistake can cost
gone in a single wire transfer, almost never recovered
That's not a worst case — it's an ordinary invoice size at a lot of small and mid-size businesses.
What you actually get
Stop attachment fraud, without asking your team or your recipients to do anything technical.
No IT rollout, no password policies, no help-desk calls — near-zero setup, no changes to your existing mail setup.
Stops attachments from being altered
The file that arrives is the one that was sent — no bank details swapped, no PDF quietly edited in transit. That's the fraud pattern behind most attachment scams, closed at the source.
A low-friction check, not new hardware
Recipients confirm who they are with a device check plus a one-time text message — sent to a phone number your company already has on file, not a new app, token, or piece of hardware to hand out.
Nothing for a hacked inbox to steal
The attachment itself never sits in an inbox. If a recipient's email does get compromised, there's no file sitting there waiting to be read or forwarded.
Near-zero IT setup, self-service from day one
Nothing to install or reconfigure in your existing mail setup — no IT expertise needed on your side or the recipient's. If your team gets stuck, step-by-step documentation covers setup end-to-end.
Prefer to read it yourself first? Browse the setup documentation →
The flow
Five steps, no extra work for your team.
Nothing changes for the sender. One quick, one-time setup for the recipient. Every visit after that is a single tap.
Watch the setup, start to finish
A 90-second walkthrough of what a recipient sees the first time — device check, text message, done.
Send email exactly as normal
Your team attaches files and sends through their existing email, same as always. Nothing to change.
The file is removed and stored safely
Adlerwacht takes the attachment out before it ever reaches an inbox, and keeps it somewhere no email hack can reach.
The recipient gets a simple notice
Just a message with a retrieval code — no file, no link that skips a check, nothing for a hacker to grab or tamper with.
They confirm who they are — once, over two channels
The first time, the recipient sets up a fingerprint, face, or security key check on their own device, and confirms a one-time code sent by text message to the phone number your company already has on file.
One tap unlocks it every time after
No passwords, no codes emailed back and forth. Just a quick check on their own device — the channel a hacked inbox alone can't reach.
Free tool
How secure is your company's email?
Enter any domain to see its public SPF, DKIM, and DMARC protection in seconds.
Built to grow
One verification channel today. More on the way.
A one-time text message is the second factor Adlerwacht uses right now, because it's the one number almost every company already has for the people they send documents to. The verification system is built to support additional channels over time, as they make sense for different recipients and regions.
Protect your attachments.
Protect your customers.
Set up in minutes. No credit card required — you're invoiced directly, and you can cancel any time.