Chrome marking files uploaded through jotform as dangerous files and being blocked.

Hi there,

We had issues with erros from submission through jotform since yesterday.

And now we are receiving news from our clients using jotform and receiving email responses from jotform, including downloading from links uploaded from jotform marked as dangerous and wont download from chrome.

Please see attached snippets by one of our clients.

https://gm1.ggpht.com/TYWO6T9-e3bPxnxX2XGCROQtmUw6byzmvZLhcFR_sGH4SQeOh3iu0TGS1cRO-02V1lixgfZ5vJdaznYuBeFnsF7Z9RZRQg9NJT9kA1_Qo7R4L1Yi6jiz1Oy0VbrHhmtFGLsCcgoIsqj1SOkOudRmOE-UyiPmRbcnNt880rk0Namlgql1ThKPKmhmrCQZyLvWsbDCfHkVyNYLZfUK10dFYkOUqtBxZBkiijmMYHfpX_Wula5dF-ZVRaS1FPB6-zUQvdYUVwQXo9KoYw5l7hsFCu1WB69Wenv0jzJO6pdZFW7cgbkEsF7Ujta0Hn_4qajaKc_DRkG7GmojEdviKu_8W7SiF01mVpmXpGesMvsUNMJGZ0sP-JTYmJl8u-CRzVzDdvFZzQ2QKZZB4J2ed5dz4FHFLWG_lYDg8GYQhpMSIkARlYrmRLI2K6OJ601l-NXWA0UeZw-lZPXrCfSjoJfpZXrHQzTI9V-Yuwh6V4paPcIVQS2btugmwuVAEbODLUqnzPpnFiJg_9Nz0nEjIVDt-ENxvkD1RiSnxyaMcUbivoIYcsvG5oxVixCoVlzJqFaiwifaUmiyHTCs4m9nBYzFvKSV_SAUcRVL88qRsedhPZLdbI089ZNdAoUjYVHTj5_2lLJifkKBFpXs-vTUtG01IyUP11_-TQR-OysDaFZbqmfk1wJ6CPIfly8aHDPW8li6BuuaDVgpQTgToCHYGEvHnVjbGSyrRqX7p9mF=s0-l75-ft-l75-ft

It's probably because of the file extension. Google Chrome and other web browsers will try and identify files that are possibly malicious. One minor flaw in this concept is that most web browsers often will flag unknown files as malicious. This is commonly known as heuristics, which is a fancy word for guessing.

I downloaded the file and scanned it using NOD32 Antivirus and no virus or malicious virus detected.

If you want to download it, please follow the guide/video here: https://bit.ly/2ytzwPn

Is your file upload tool allowing a virus to be uploaded?

Our servers are protected with security software so it is possible that those files will be rejected. Furthermore, executable virus or any .exe files can't be uploaded in the file upload tool. Updated browsers are also capable of detecting malicious files so you don't have to worry about it.

Hello Jherwin,

Is it possible that because it bypasses Jotforms server (AWS) that it inherits some settings or metadata that Chrome doesnt like?

I have read some blogs that some files coming from AWS gets blocked.

I will have to test if direct download from other cloud services have the same effect such as Dropbox or Gdrive.

Other files with other file extension are fine though. Can you send us all download links for the file that shows a "File is dangerous"? I will escalate this to our developer for further check.

Also, I tried uploading the file to google drive but the message was not displayed when I downloaded the file (see screenshot below).