3.6M+ known threats in our database · updated daily

Not sure about a file on WhatsApp? Check it safely before you open it.

In about a minute you get a clear answer: safe or dangerous. Nothing to install. No settings. No tech skills needed.

Check 5 files free
No obligationThen from $4.99 a month
  • Fast, secure checks
  • We don't store your files
  • A clear answer, no tech jargon
  • Secure payment
Example conversation

Built on proven security tools and research

  • ESET
  • Trellix
  • ClamAV
  • Mandiant capa
  • ReversingLabs
  • YARA
  • Phishing.Database
  • oletools

Names belong to their owners. wacheck is independent and not affiliated with them.

Why it matters

One fake file. Hijacked accounts, leaked data, lost trust.

Criminals know that busy people open files fast. They dress up as clients, banks, couriers or your own colleagues.

What you see

PDFInvoice_March_2026.pdfPDF · 214 KB · from "Accounting"

What it really is

EXEInvoice_March_2026.pdf.exeWindows program
  • The "invoice" that is not an invoice

    A file named like a PDF that is really a program. One tap, and it runs on your device.

  • Your accounts taken over

    Hidden scripts and fake login pages steal passwords to email, banking and WhatsApp itself.

  • Your clients put at risk

    Once a device is infected, your contacts and documents can be used against the people who trust you.

  • Your reputation on the line

    Explaining to a client that their data leaked from your phone is a conversation nobody wants.

Trust the sender? Still worth a check.

People forward infected files without knowing it. Their own phone or computer may already be compromised, or their account taken over. Checking takes a moment and protects you both.

Check 5 files free

How it works

Three steps. You already know how to do all of them.

  1. 1

    Forward the file

    Got a document, photo or archive you are not sure about? Forward it to the wacheck number on WhatsApp. That is it.

  2. 2

    We check it for you, safely

    Our security systems analyse the file in an isolated environment. You don’t open anything and you don’t risk anything.

  3. 3

    You get a clear answer

    A short message in plain words: what we found and what to do. Usually in about a minute.

Answers you can understand at a glance

✅ CLEAN — safe to open

📄 Offer_2026.pdf
PDF · 1.2 MB

No viruses, macros, scripts or tricks found.

10:42

Open the file as usual.

🛑 DANGEROUS — do not open this file

📄 Invoice_March_2026.pdf
PDF · 214 KB

What we found
🔴 Disguised: named .pdf, but it is really a Windows program

👉 Delete it and don't forward it.

10:42

Don’t open it. Delete it and don’t forward it to anyone.

Three steps you already know. Try them on 5 files.

Check 5 files free

What we check

Every file is checked 6 ways

Not one scanner, but layers that look at a file from different angles, the way a security team would.

Over 3.6 million known threats

Every file is matched against 3.6M+ virus signatures and 7,000+ detection rules. The virus database is updated daily.

Disguised files

A “.pdf” or “.jpg” that is really a program or a script. One of the most common tricks scammers use.

Dangerous Word and Excel files

Macros that start by themselves, hidden commands and documents that download more once they are opened.

Phishing links

Links in PDFs and documents are checked against a daily-updated list of known phishing websites.

Archives, opened layer by layer

ZIP and RAR files are unpacked and every file inside is checked. Password-locked archives can’t always be opened.

Hidden personal information

GPS location, author and device names hidden in photos and documents. We tell you before you share them.

See it on your own file.

Check 5 files free

No protection can promise 100%. That is why every file is checked in many ways and our threat database is updated every day.

Privacy

We check your files. We do not keep them.

  1. You forward one file

    Only that file. We never see your other chats, contacts or photos.

  2. Automatic check

    In an isolated environment. No person ever looks at your file.

  3. File deleted

    Right after you get the answer. No copy is kept.

  4. Messages disappear

    Our replies delete themselves a few minutes after you read them.

  • No copies
  • No archive
  • No one looking

Your files stay yours. Try it risk-free.

Check 5 files free

Pricing

One simple monthly price

Start with 5 free checks, no obligation. Then one flat price: no contracts, no hidden fees.

Standard

$4.99 / month Final price · no VAT added**

Up to 100 files a month

  • Fast, secure checks
  • All checks included
  • English, Polish or Ukrainian
  • Files deleted after the check
Start Standard
Best for busy people

Unlimited

$9.99 / month Final price · no VAT added**

No limit on files

  • Everything in Standard
  • Check as many files as you want
  • Ideal for sales and management teams
  • Peace of mind, every day
Start Unlimited

About 17 cents a day for peace of mind with every file.*

*With the Standard plan. **Final prices in US dollars, no VAT added: the seller is VAT-exempt. Cancel anytime.

Made for you

You run the business. Not the IT department.

Directors, managers, sales people, owners: you live on WhatsApp, you get files from clients and partners all day, and you have no time to become a security expert.

  • Directors and ownersContracts, offers, reports
  • Sales and account managersOrders, price lists, specs
  • Real estate and car salesScanned IDs, contracts, photos
  • Accountants and lawyersInvoices, statements, letters
  • Anyone who gets files from strangersCVs, invitations, “delivery notices”
  • If you would hesitate before opening it, forward it first.

    Check 5 files free

Questions

Questions people ask

Yes. Your first 5 checks are on us, with no obligation. See for yourself before you choose a plan.

Still unsure? The best way is to try it yourself.

Check 5 files free

Before you open the next file, check it.

Your first 5 checks are on us. Just forward the file on WhatsApp.

Check 5 files free
  • No obligation
  • Nothing to install
  • Cancel anytime