Why is there a message saying “Dangerous Document” on WhatsApp? Here’s the explanation
Have you ever sent or received a file on WhatsApp, then the message “Dangerous Document” or “Document may be dangerous” appears? Many people immediately panic or think it’s a virus. But what does that warning actually mean?
That message is an automatic warning from WhatsApp that appears if their system detects a file that may be risky. But remember, the key word is may. This means that the file is not necessarily dangerous. WhatsApp only gives a warning so that we are more careful before opening or downloading the document.
Why is there a warning?
WhatsApp does have its own security system. Every file sent via chat will be scanned by their system. If the file has suspicious characteristics, such as:
-
Rarely used file extensions (eg. apk, .exe, .js)
-
File names that are too long or strange
-
Files sent from unknown numbers
-
Files sent in large quantities in a short time
...then the system will immediately mark the file as "possibly dangerous".
This is a kind of prevention system, like in email if you receive an attachment from an unknown sender. WhatsApp just wants to remind you not to just open files and become a victim of fraud, scams, or even viruses.
Case Example
For example, you get a file from an unknown number. The file name is: InvitationWedding.apk. Even though you know that invitation files are usually in PDF or image format. But this is .apk (Android application installation file).
If you dare to open and install the file, your cellphone could be filled with a malicious application that steals personal data or even hacks your WhatsApp account. Well, this is where the warning "Document may be dangerous" appears. So that you think twice before clicking.
Should I Be Afraid?
Not really. If you got the file from a friend or family member and you are sure the contents are safe, you can ignore the warning. But still, only open the file if you are absolutely sure the source is trustworthy.
Another example, you were sent the file GroupAssignment.docx from a college friend. Because it is a regular Word document and you know exactly who sent it, it is no problem. Sometimes the WhatsApp system is just too careful.
Safe Tips
-
Don't just open files from strangers
-
Check the file extension first, avoid .apk, .exe, or .js files unless you understand their contents
-
Always update WhatsApp and antivirus on your phone
-
If in doubt, ask the sender directly: "What is this file?"
Meaning
The words "dangerous document" on WhatsApp do not mean that the file is 100% a virus or scam. But it is a warning from the system to be more careful. If you know the sender and know the contents of the file, it is usually safe. But if you don't know them? It's better not to open it.
It's better to be careful than to regret it later, right?