Questions tagged [whatsapp]
Whatsapp is a proprietary instant messaging client for smartphones
158 questions
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Why is a scammer requesting a contact via WhatsApp and not SMS? [closed]
Dad, this is my new phone number (+33...). Contact me there asap but only via What's App and not SMS!
Is this a scam? :)
So this is a message I received from "my son" in which "he"...
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Can the WhatsApp servers really not read our messages?
As Whatsapp uses Diffie-Hellman algorithm for a key exchange and SSL certification ensures the authenticity of its server for the end user like me.
As per my understanding, messages first has to go to ...
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I want to know about some techniques to get phone number information [closed]
I was being harassed by a phone number on WhatsApp, and when I tried to get details about the number from the company whose SIM was being used, they said that the number is not registered with them. ...
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Why whatsapp only let you create 1 passkey?
Whatsapp is rolling out passkeys. I don't think backing up passkeys in a password manager is a good idea. I'd like to have device bound passkeys but they only allow me to create one. How should I be ...
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Can malware be contained in an image sent via WhatsApp?
I went online with a new WhatsApp account earlier (with a new number), and the first thing that happened was that I received a threatening message from a number with an ISD commonly used by scammers ...
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How do end-to-end encryption (E2EE) IM apps implementing push notifications? [duplicate]
Say WhatsApp and Signal on Android devices, how do they keep the E2EE not be broken?
Some answers claimed that WhatsApp uses VoIP background mode on iOS to make the push notification invoke the app to ...
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How WhatsApp knows that account is logged in on 1 device
Recently I was switching devices and my WhatsApp got logged out from 1st device when I logged in to 2nd device.
And I got this question on my mind
How WhatsApp knows that account is logged in on 1 ...
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block whatsapp web file transfer but not chating [duplicate]
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 ...
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How to tell if an image has a virus? [duplicate]
I received (and opened) an image from Whatsapp. How can I know if this image contains a virus (spyware)?
Is it possible to send photos containing virus using Whatsapp Mod (unofficial versions of ...
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Get root permission on android for metasploit
Is there any way to get into the root file system in android with an already installed msfvenom apk in reverse_tcp (to get the whatsapp encryption key)
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Free messaging (but not images, video, etc) on United Airlines free wifi: is it secure?
I recently flew with United Airlines and I used their free messaging wi-fi plan.
I could text my friends on Whatsapp, but I could not send (nor receive) multimedia content like images, videos or audio ...
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Can a VPN hide my IP on Whatsapp?
My IP can be seen by a Whatsapp contact using the netstat command. Can a VPN hide my real IP to them? Or their netstat will still show my real IP?
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Is the new Whatsapp Web update compatible with E2E encryption?
You may see this question as a logical successor of this post.
With the new Whatsapp Web update it is now usable without keeping the smartphone online. I can't imagine how this is compatible with End-...
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Decrypting WhatsApp traffic and blocking file uploads possible using a firewall ssl decryption policy?
So we want to block file uploads on WhatsApp but since it's encrypted, I doubt this can be done, however, can PANOS decrypt WhatsApp??
I ask because WhatsApp doesn't exactly use SSL right, it's more ...
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Is it more secure to receive OTP or send OTP?
I am working on a project that requires users to set up 2-Factor Authentication. As an additional option (apart from the Authenticator app), users can choose their WhatsApp number as an authentication ...
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Unknown numbers sending videos on WhatsApp. What should I do?
A number with ISD code +92 sent a video via WhatsApp. No text, only a video. About 20 days later, another number with same ISD sent another video.
Should I open the video?
OR
Should I Report and Block?...
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What happens when app have access to your photos?
These days I see many apps request access to photos on iPhone. I understand app request access to photos to iOS which then request access to me, that sounds ok. In that context I can allow access to ...
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Hijacking a WhatsApp session
If a device running a WhatsApp account has already be compromised. Can the attacker steal session cookies/encryption keys on the device and establish a persistent connection to receive calls and ...
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Does my ISP have a clue about what type of activity I'm doing on WhatsApp/Viber/Telegram?
Can my ISP see the difference between sending messages, making video call, and simply engaging with communities - building on traffic types?
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How can I protect myself from this simple, yet lethal (SE) WhatsApp hack?
I've been using WhatsApp as well as my current phone number for at least eight years now. As of now, everything went pretty smooth. That's why the message four days ago, 13rd of August 2021, struck me:...
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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 ...
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How to run whatsapp as privately as possible?
I believe it is fairly common knowledge that there are security and privacy concerns regards WhatsApp. The EFF, Ed Snowden, and many others, have expressed concern about the apps' integrity. You don't ...
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WhatsApp message from own number + 1 [closed]
I got a WhatsApp message from a number which is exactly mine but the last digit is increased by one (5 instead of 4).
It was just a "Hi" and and a photo of a random guy. I asked who it is ...
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Only allowing WhatsApp traffic through firewalls
Problem:
On our client's ship, we have an expensive backup internet connection. We want the backup connection to only allow WhatsApp traffic. This way we won't be greeted with an extreme bill because ...
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I got a call from a contact on What'sApp and that person says they didn't call me even by accident. Should I be worried about using What'sApp?
I got a call from a contact on What'sApp, and when I picked up there was no audio. The person says they weren't even holding their phone when it happened, and it even took a minute for the call to ...
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How Can I Backup App Data In Android/iOS Devices?
After my other post I'm looking over some other possibilities to do what I'm trying to do.
How To Recover End-To-End Encrypted Data After Losing Private Key?
If I save user data in server, in order to ...
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How To Recover End-To-End Encrypted Data After Losing Private Key?
I'm creating a mobile app which has chat feature in it. Since I wanted to make it secure, I'll do some encryption to messages and the data. I'm thinking of using End-To-End encryption for it but I've ...
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Radio transmission on my whatsapp voice note
I was sending a voice note to a friend and when I listened to it, the first ~6 seconds were completely normal and then something weird happened. A radio transmission from some radio station (I don't ...
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Telegram, Signal, WhatsApp: chats encrypted in local storage on mobile devices?
I wonder if the chat content's are encrypted in local storage on mobile devices (iOS, Android).
I hardly found any reliable information about this topic.
My thought is about somebody stealing my ...
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End-2-end encryption with WhatsApp [duplicate]
I have had recently gone through the horror of transferring WhatsApp conversations when changing phones (android for iPhone). Actually, the thing that it is close to impossible for everyday folk is a ...
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If Whatsapp media messages are e2e encrypted, what is the point of storing popular messages on the server?
There is something I don't understand about whatsapp's privacy policy.
Your Messages. We do not retain your messages in the ordinary course of providing our Services to you. Once your messages (...
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If I accidentally agree for new WhatsApp's terms and conditions, How to revert that? [closed]
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 ...
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Following the new WhatsApp data privacy update, why does WhatsApp ask from users, even if they didn't, who is going to check their source code?
New WhatsApp data privacy update, that it will share our data with Facebook, we all know Facebook owns WhatsApp and this is obvious Facebook can always access users of WhatsApp as well. So why to ask ...
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Does it make sense to create a Facebook account so I can tell them not to track me?
Not sure this is the right site to ask this, but here it goes.
I've never created a Facebook account, because I don't want people to know about me more than I know about them. But I do have an ...
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Does WhatsApp's link preview on the link messages leak information?
When we want to send a message that contains only a link - such as a question from the Stack Exchange network - WhatsApp displays information from the website as below:
Does this leak information ...
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Can I use WhatsApp to securely send public key, symmetric key and private key?
I am asking this because WhatsApp says it is end-to-end encrypted.
Are there any problems with sending a public key through WhatsApp?
There might be some objections to sending symmetric and private ...
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How Whatsapp shows link previews despite E2E encryption?
Someone sends me a link. Whatsapp shows its preview. How can they do that despite being E2E encrypted?
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What secure mobile messaging app is publicly known to be the most frustrating for state intelligence to read? [closed]
I imagine like either leaked or otherwise published official memos on efforts and signals intelligence programs to intercept and crack different types of communications either lamenting or chronicling ...
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Can WhatsApp, Signal or Telegram be hacked through a SIM SWAP attack?
In Cuba the telecoms/ISP monopoly, Etecsa, works with the political police to spy on dissidents, journalists and others.
A common attack in Cuba is therefore SIM Swapping which is easy for them. It is ...
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Can someone impersonate you on WhatsApp?
Well I'm not a developer so I'm here to resolve a specific question.
I have been investigating this subject for a while now and I need and opinion from experts or developers which really understand ...
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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'...
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How was I able to login Whatsapp Web when my Phone was turned off and SIM card removed?
I don't have my phone at the moment, since I turned it over yesterday at the shop for a screen replacement.
The SIM card is removed and it's sitting in my wallet now.
When I opened WhatsApp Web a ...
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Whatsapp suspicious message
Received a message from an unknown individual on WhatsApp messenger. I did not recognize the number (the person is not on my contact list), and there is probably an attachment (4 messages were sent).
...
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Why is uPnP settings in router showing external IP address and WhatsApp as app description?
I was fiddling with my router's uPnP settings and found this:
Why is an external IP address showing here?
I also did a reverse IP search and to my surprise the IP 25.54.27.39 showed "UK Ministry ...
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Is group call for Whatsapp P2P or through server like Zoom? [closed]
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?
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Locate WhatsApp message destination [duplicate]
I've been interested in message tracing, so I played a bit with Cisco's Packet Tracer and Wireshark.
Is it possible to locate the destination IP of a message (packages) been sent via WhatsApp? I am ...
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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 ...
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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 ...
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Are Whatsapp and Signal truly secure and user-privacy friendly?
I have been learning the famous "SIGNAL MESSAGING PROTOCOL", Its brilliantly designed and perfectly secure , but I doubt on its implementations
Famous messenger services like Whatsapp and Signal ...
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Is WhatsApp end-to-end encryption applied to images?
I know that for text, WhatsApp messages are encrypted in a way no "man in the middle" could read them. But what about images?
Imagine you received some private image on your smartphone. Then you open ...
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