Questions tagged [whatsapp]

Whatsapp is a proprietary instant messaging client for smartphones

Filter by
Sorted by
Tagged with
0
votes
2answers
110 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?
2
votes
0answers
124 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
votes
1answer
203 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 ...
1
vote
0answers
106 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 ...
1
vote
0answers
57 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'...
1
vote
1answer
134 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 ...
0
votes
0answers
410 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 ...
1
vote
1answer
106 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
votes
1answer
182 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 ...
-1
votes
1answer
76 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?
0
votes
1answer
96 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 ...
0
votes
1answer
202 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 ...
0
votes
1answer
404 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 ...
1
vote
2answers
254 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 ...
1
vote
1answer
394 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 ...
1
vote
0answers
70 views

How does WhatsApp retain private key? [duplicate]

Does anyone know how does WhatsApp retain private key? Based on what I know it looks like private keys are stored on the device. What happens when someone changes their device? How does the private ...
0
votes
0answers
37 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?
0
votes
2answers
131 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 ...
1
vote
0answers
80 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 ...
0
votes
0answers
163 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
votes
2answers
4k 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 ...
0
votes
0answers
130 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
votes
1answer
1k 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 ...
0
votes
2answers
137 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 ...
1
vote
2answers
866 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
votes
1answer
296 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 (...
0
votes
2answers
1k 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 ...
1
vote
0answers
668 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 ...
0
votes
1answer
454 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
votes
1answer
117 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?
0
votes
0answers
91 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, ...
-5
votes
1answer
200 views

Is there some hidden worm attached with whatsapp messages that state forward this messgae to 20 people? [closed]

NOTE: I am New contributor, if the question needs some improvement please tell in comment before down voting! Usually I see messages on whatsapp and sometime on some other forums stating that forward ...
1
vote
3answers
2k views

Whatsapp web security

If I use WhatsApp Web on a computer at work that is connected through a proxy, is there a possibility that they will intercept my messages? I know that, thanks to the proxy, they can see the pages ...
4
votes
4answers
2k views

Why does WhatsApp not encrypt Google Drive backups?

WhatsApp has end-to-end encryption, promising privacy to users. However, it becomes useless if backups to Google Drive are unencrypted. Our supposedly private data goes to the control of Google. No ...
2
votes
1answer
635 views

How did Instagram know the content of my WhatsApp conversation and Google searches?

My friend forwarded me some information about a business via WhatsApp (on mobile). I did some Google searching on that business on a desktop. I've deactivated my Facebook account for almost a year ...
1
vote
0answers
41 views

WhatsApp spyware application through WhatsApp call [duplicate]

Probably everyone heard that there was high security vulnerability in WhatsApp this week https://www.forbes.com/sites/zakdoffman/2019/05/14/whatsapps-cybersecurity-breach-phones-hit-with-israeli-...
2
votes
1answer
842 views

How can I open a malicious image in whatsapp safely?

I have got an image send by whatsapp on my android tabled, which I only can see when I press the download icon. How can I see the image, without getting a virus when the image is malicious? Are ...
0
votes
0answers
70 views

Whatsapp requests UPnP [duplicate]

What info is taken when WhatsApp requests UPnP? Is it hacked? What does it do with UPnP? I have checked many websites but the answer is the same, that UPnP is harmful. But I want full details about ...
2
votes
1answer
382 views

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 ...
4
votes
1answer
7k views

How to block WhatsApp traffic in TP Link router? [closed]

Can anyone tell me how to block Android WhatsApp traffic in a TP Link router?
6
votes
1answer
1k views

Understanding a Whatsapp account hack (social engineering?)

A friend of mine (Bob) received a suspicious Whatsapp message today, seemingly from a former colleague (Alice), who claimed to have "forwarded [to Bob] an SMS with a code in it by mistake", and who ...
6
votes
2answers
14k views

Found an application (Whatsapp) initiating UPnP requests, is it something that I should worry about?

I have logged in into my router using the web interface. I was checking UPnP forwarding (which is enabled by default), and found out that whatsapp is initiating a UPnP request on port 65072. Is ...
5
votes
2answers
479 views

A site supports Public key length of 256 bits while best practice is 1024+ - what does this mean?

Given that this is asymmetric cryptography with private/public key, I am not sure if reduced bit length is breakable easier than longer keys. I understand that the key population is reduced (hence ...
26
votes
4answers
7k views

How can WhatsApp do both targeted advertisement and end-to-end encryption?

Recently there have been a lot of news articles which say that Facebook will very soon add advertising to WhatsApp, yet will keep the end-to-end encryption (source): [M]essages will remain end-to-...
1
vote
2answers
470 views

Can Facebook break the WhatsApp E2E encryption without the customers noticing?

I read a lot of reports from corporate media complaining that you can't censor "fake news" sent via WhatsApp. Mainstream media claims that because of "fake news" the wrong person got elected in Brazil....
2
votes
1answer
2k views

Does Whatsapp change key when switching phone?

Alright so, I really didn't expect this but here's the story. I was doing some tests, I copied one of the .db.crypt12 in /sotrage/emulated/0/Whatsapp/Databases/ from my phone to my computer, then, I ...
10
votes
1answer
167 views

How can faulty version of an iOS app (such as WhatsApp) expose the whole device to crashes or take-over

There was a lot of recent, prominent news about a security vulnerability in WhatsApp that affects also iOS versions of the app. The volnerability has been described as carrying the risk of an attacker ...
0
votes
1answer
3k views

Can Whatsapp be MAC spoofed if the victim's device isn't on the same local network as the hacker's device?

I realize that MAC addresses are only used to tell different devices apart if they are on the same local network. So, what if they're not? Is MAC spoofing in Whatsapp still possible? Even if the ...
3
votes
0answers
170 views

Can contacts be stolen over public WiFi?

Being on vacation for a few weeks, I only have access to public WiFi. After I have done some research on google and using the search button here (because "how safe is public WiFi" is a really common ...
1
vote
1answer
1k views

WhatsApp e2e encryption when forwarding video files

If someone sends me a large video file on WhatsApp I believe it is compressed and encrypted. I believe it can only be decrypted on my device with a key that never leaves my device. If I was to ...