IT Security Stack Exchange
IT Security Stack Exchange

Questions tagged [whatsapp]

Whatsapp is a proprietary instant messaging client for smartphones

155 questions
64
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2 answers

Whatsapp encryption keys

Today I woke up and checked my Whatsapp and got the message that communications are encrypted end-to-end from now on. However, how can I know whether Whatsapp can be trusted? I did not generate my private/public keys, nor can I change them. Isn't…
Quora Feans
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2 answers

How might the Chinese government be blocking only specific types of WhatsApp traffic?

There are currently media reports that the Chinese government are blocking some types of messages sent via WhatsApp ("pictures, voice messages and video"). Given that WhatsApp traffic has end-to-end encryption, what mechanisms is it likely that the…
Rory McCune
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4
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1 answer

Non-deniability of WhatsApp message

A is claiming that B has sent him a certain WhatsApp message. And if this incident is proven to be true, this will mean social and legal harm for B. But as a matter of fact, B has not really sent the message. What is the best way for B to deny that…
Masroor
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3
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1 answer

If I accidentally agree for new WhatsApp's terms and conditions, How to revert that?

WhatsApp team updates their policy and it will be from Feb 8. I accidentally agreed with the policy. Later I realized the policy is not good. How can I revert my agreement with the WhatsApp team? We have alternatives like Signal and telegram but I…
Sivaram Rasathurai
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3
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2 answers

Whatsapp analysis on Wireshark

I have been asked to do a paper on Whatsapp for Networks (college class). As far as I know, it is based on XMPP. But I can't find any of its packages on the WireShark process (using whatsapp web), only TCP protocols. I have downloaded the Packet…
Luis Filipe
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2
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0 answers

WhatsApp Web Logged in computers

I usually only use WhatsApp on my phone but today I needed to write a longer message and decided to use WhatsApp Web. To my surprise, when I went to scan the barcode, I saw that WhatsApp Web was already connected on another computer running Windows…
karoline
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1 answer

Monitoring sender and/or receiver identity of a Whatsapp message?

I know that Whatsapp is using end-to-end encryption, but is the sender and/or reciever identity also encrypted in a different layer? If so, is there any way to monitor the party IDs of a conversation by a long-term sniffing?
Yotam Hochman
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1 answer

"Whatsapp Web is open in another computer or browser" - What should I do?

I was using Whatsapp Web on chrome, and I got the message "Whatsapp Web is already open in another computer or browser". What should I do?
Ali Bdeir
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1 answer

Are Whatsapp phone numbers viewable by network admins?

If I connect to a network, is the network admin able to identify user phone numbers used by Whatsapp through the network traffic? In other words, are phone numbers used to signup by messaging apps such as Whatsapp or Telegram viewable by network…
randomizedmole
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1
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WhatsApp logged me out on device - is it a security concern?

I went to bed last night, and put my Android phone into Airplane mode, something I do pretty regularly at night, except when I'm on call. However, this morning my WhatsApp popped up telling me that I'm no longer registered on that device (I'm not…
Sonique
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block whatsapp web file transfer but not chating

I work in an organisation where we need to block WhatsApp web file transfers. Meaning chatting will work but downloading and uploading files are blocked. We're using Palo Alto firewalls. I've tried anything on it but nothing seemed to have…
Thomas Shredster
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0
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1 answer

Is group call for Whatsapp P2P or through server like Zoom?

Number of participants for group call is up to 8 for Whatsapp. Is group call P2P or through Whatsapp server like Zoom due to number of participants?
user215422
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1 answer

WhatsApp account got "hacked"/hijacked?

I was on a WhatsApp call with my friend (Alice) when the call suddenly dropped. I then immediately opened my chats and noticed an alert in a mutual group that said "Your security code with Alice changed, because their account was registered on a new…
d.a.vorm
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1 answer

Is it secure to use 3rd party apps like WASender for bulk WhatsApp messaging through WhatsApp web?

A client collects phone numbers through lead form on his website and he is hell-bent on sending WhatsApp instead of email. To build a solution from scratch is out of the question of after some research I came across Wasender, they claim to provide…
Rahul Agarwal
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2 answers

Are deleted WhatsApp (or similar) messages recoverable?

When one deletes a Whatsapp (or other similar apps) message from a device (assume that no Google Drive, ICloud backup), can this message be recovered from the device? Does Whatsapp save messages into SQLite DB as normal text/unencrypted format?
user215422
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