Collaborate Disseminate
This question is about any chat service that supports end-to-end encrypted group chats, for instance Signal, XMPP + OMEMO (closed group chats in particular), WhatsApp, and the like.
How do these services ensure that a hostil… Continue reading How do end-to-end encrypted chat services ensure that the server admin doesn’t add new members to a chat?
The “Kitten of Doom” denial-of-service attack is easy to carry out. Continue reading Emoji Attack Can Kill Skype for Business Chat
Given that WhatsApp does not advertise itself as secure, and that the EFF foundation is not giving any recomendations on open source messaging apps while providing a guide to install Signal and another guide to install WhatsA… Continue reading Is messaging using a mobile jabber client and the jabber network secure?
People who want to chat SSH into a private server one of them owns, the owner does a screen -S s1, and everyone connects to this using screen -x s1. They can then chat easily (simple aliases like alias e=”echo ‘Mike: ‘” can a… Continue reading How secure is this instant-messaging setup?
What is the best XMPP client? I know many of XMPP clients are not audited have bugs and can be exploited, so I don’t know what is the most secure.
Now I think about Gajim, Pidgin and Dino
Is it possible for an adversary send malware over messages? I mean, when the victim clicks on the message sent by the attacker, a malware should be installed into his phone (in background). The hacker should then be able to s… Continue reading Can malware be installed on a mobile phone when the user opens an sms?
I’m basing this question off the iOS Security Guide.
If I understand this correctly, when you enlist in iMessage, the private key stays on your device, while the public key is pushed to a directory service. Since iMessage supports multipl… Continue reading Can Apple technically intercept iMessage messages
When I am talking to my mum on fb call sometimes the banner on top of the ipad says its recording…. Is Facebook listening to me?
If a user decides to use a third-party SOCKS5 proxy for his Telegram client, what are possible security risks for the user?
Specifically if the proxy suggests using the same login and password for anyone signing up (eg).
In… Continue reading Telegram: Security risks for a user of using third-party socks5 proxy?
Most people want to know their instant messages are securely wrapped up—whether that’s for personal privacy or protecting business communications. There are a lot of solutions out there for better securing IMs.
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How-tos
Ta… Continue reading Keeping your business and personal instant messages secure