Questions tagged [whatsapp]

Whatsapp is a proprietary instant messaging client for smartphones

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1answer
105 views

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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0answers
127 views

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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1answer
103 views

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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0answers
114 views

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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1answer
150 views

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 ...
3
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1answer
703 views

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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1answer
136 views

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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0answers
366 views

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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0answers
55 views

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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0answers
73 views

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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4answers
8k views

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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1answer
112 views

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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1answer
637 views

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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0answers
22 views

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 ...
2
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2answers
489 views

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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1answer
16k views

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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1answer
134 views

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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0answers
92 views

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 ...
7
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1answer
621 views

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 ...
30
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3answers
10k views

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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4answers
623 views

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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0answers
185 views

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 ...
5
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1answer
1k views

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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0answers
796 views

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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0answers
545 views

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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1answer
171 views

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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0answers
2k views

Is it secure to use services in Rambox?

Same question is asked for More secure to use e.g. Whatsapp Web in Franz than in browser? [closed]. On its answer it is said that: No, Franz is not inherently more secure than a regular browser. In ...
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1answer
184 views

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). ...
3
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1answer
719 views

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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1answer
427 views

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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1answer
436 views

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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1answer
575 views

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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1answer
633 views

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 ...
2
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2answers
551 views

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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1answer
3k views

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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0answers
92 views

Does Whatsapp/Signal/Telegram have a backdoor access to my message which is a copy of my private encryption key? [duplicate]

Does Whatsapp/Signal/Telegram have a backdoor access to my message which is a copy of my private encryption key?
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2answers
430 views

Protective steps to prevent files sent through WhatsApp from installing malware

I have been reading articles about exploits which allows someone to send an MP4, PDF or other file type through WhatsApp or other service, which self-executes to install malware without any user click ...
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0answers
110 views

How I rescue my Android from a trojan and how did I get it? [closed]

I received a message with the famous link My-love co via Whatsapp and I never clicked on the link; I blocked the contact and deleted the message containing it; such a link was reported as infected by ...
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0answers
454 views

What's the scam? Unknown users joining and leaving WhatsApp groups

I'm on a few WhatsApp groups that have signup links. Lately (last few months) I've noticed some very odd activity on a few of these groups: every few days I notice a number (often from a country with ...
4
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2answers
7k views

Can someone hack my phone by sending me a file (e.g. PDF) via Whatsapp?

My work requires (and depends on) Whatsapp for daily sharing of files with many people (PDF, PowerPoint, Word, Images, Web links...), and I was wondering if it is possible that someone can hack our ...
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0answers
187 views

What are the security risks of using WhatSender tool?

WhatSender sends Bulk Whatsapp Messages directly from PC using whatsapp web. How it works Can this tool actually access messages and images from other chats?
2
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1answer
4k views

How does Whatsapp store encryption keys on the phone?

It looks like Whatsapp stores encryption keys on the phone side, but I wonder if there are any details on how they do it? Do they use Android Keystore / Secure Enclave? Or something else? The main ...
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2answers
275 views

Are deleted WhatsApp (or similar) messages recoverable? [closed]

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 ...
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2answers
2k views

How an ISP can detect if someone having a WhatsApp call or video call? without detecting or blocking the rest of the app [duplicate]

I am asking the questions because of the latest news: https://www.bbc.com/news/world-middle-east-50095448 I wonder how the ISP can detect the use of call and video calls, without detecting or ...
5
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1answer
333 views

How can WhatsApp be listed on the EFF secure application toolset when it's not opensource? [closed]

I see this EFF tool guide, proposing WhatsApp as one of "our pick of the best, most secure applications" source. How can WhatsApp be trusted as a secure application when it is not open-source (...
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2answers
3k views

Is it technically possible to clear WhatsApp chat also on receiver's phone?

A friend of mine whom I trust 100% states that a user he was exchanging messages via WhatsApp deleted the whole chat,on his phone as well. He was able to take a screenshot of the last messages before ...
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1answer
2k views

Forensics methods for obtaining WhatsApp data from Windows Desktop PCs

WhatsApp has the option to download a Windows (or Mac) Desktop version. Installation requires pairing the software with a mobile phone. I have read a similar question about Android devices, and ...
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1answer
821 views

Can someone know my geolocation by replying to Whatsapp message?

Is there any way a malicious actor could know my geolocation by replying to a Whatsapp message I have sent? Will being connected with a user allow me to see their geolocation, or would I have to reply ...
0
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1answer
189 views

How to Intercept into an iPhone having access to same Wifi [duplicate]

I would like to know, If I have password of a wifi-router? and I know the MAC address and IP of Target Iphone using this wifi-router, can I get to contents of social media like WhatsApp chats?
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0answers
104 views

How do WiFi APs distinguish between text messages and media content for encrypted messengers?

I recently took a flight with Delta airlines. They offer in-flight WiFi for messenger services iMessage, Facebook Messenger and Whatsapp and state that Words and emojis accepted. Sending photos, ...