Cybersecurity

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c/cybersecurity is a community centered on the cybersecurity and information security profession. You can come here to discuss news, post something interesting, or just chat with others.

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I am looking for a fast USB drive which has a physical write-protect enable switch on it. I would also want a BadUSB-resistant USB controller. I want this for 2 reasons:

  • So I can diagnose issues on machines where the problem may or may not be malware. This way, I can plug it into several machines without risking spreading malware.

  • So I can carry around a TailsOS drive wherever I go, and use it on public computers and friend's computers without risk of infection.

So far, I have only found one company making these things, Kanguru. There are almost no reviews of their products by reputable sources, at least not for their write-protecting drives.

Their BadUSB firmware detection module is NIST certified, which is great (given that you trust proprietary cryptography modules at all), but no certs for the main storage write protection. Also Kanguru products are very overpriced.

And no I am not using SD cards, their write protect implementation is software-based and they are too slow for me.

I am specifically looking at the Kanguru FlashTrust . My questions are:

  • Has anyone used Kanguru products and how was your experience?

  • Are there other companies that make decent quality drives with hardware write-protect switches? (Ideally ones that have FOSS firmware and are third-party tested, but I will take anything).

  • Are there any companies that make USB writeblockers which are small enough to fit in a wallet and <$50? (Example of one that is too big). That way I can use a standard, cheaper USB drive.

Oh how I wish Nitrokey made these!

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submitted 5 months ago* (last edited 5 months ago) by ModerateImprovement to c/cybersecurity
 
 

It's the top result if you searched in GitHub about removing Microsoft edge, while it's not detected by Windows Security, Eset or Kaspersky (the best av vendors) it's being detected by other av engines, is it a false positive?

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https://github.com/positive-intentions/chat

probably not... but id like to share some details about how my app works so you can tell me what im missing. id like to have wording in my app to say something like "most secure chat app in the world"... i probably cant do that because it doesnt qualify... but i want to understand why?

im not a cyber security expert. im sure there are many gaps in my knowlege of this domain.

using javascript, i created a chat app. it is using peerjs-server to create an encrypted webrtc connection. this is then used to exchange additional encryption keys from cryptography functions built into browsers to add a redundent layer of encryption. the key exchange is done like diffie-helman (which can be considered secure when exchanged over public channels)

  • i sometimes recieve feedback like "javascript is inherently insecure". i disagree with this and have opened sourced my cryptography module. its basically a thin wrapper around vanilla crypto functions of a browser. a prev post on the matter.

  • another concern for my kind of app (PWA) is that the developer may introduce malicious code. this is an important point for which i open sourced the project and give instructions for selfhosting. selhosting this app has some unique features. unlike many other selfhosted projects, this app can be hosted on github-pages and instructions are provided. im also working on introducing a way that users can selfhost federated modules. a prev post on the matter.

  • to prevent things like browser extensions, the app uses strict CSP headers to prevent unauthorised code from running. selfhosting users should take note of this when setting up their own instance.

i think if stick to the principle of avoiding using any kind of "required" service provider (myself included) and allowing the frontend and the peerjs-server to be hosted independently, im on track for creating a chat system with the "fewest moving parts". im hoping this will lead to true p2p and i hope i can use this as a step towards true privacy and security.

i created a threat-model for the app in hopes that i could get a pro-bono security assessment, but understandable the project is too complicated for pro-bono work.

i created a decentralized todo list demo using the p2p framework used in the chat app. this is to demonstrate the bare-minimum functionality of decentralised messaging and state management.

while there are several similar apps out there like mine. i think mine is distinctly a different approach so its hard to find best practices for the functionalities i want to achieve. in particular security practices to use when using p2p technology.

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The conservative think tank blueprint for how Donald Trump should govern the US if he wins in November calls for dismantling CISA, among many cyber-related measures. Experts say this would increase cybersecurity risks, undermine critical infrastructure, and put more Americans in danger.

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DDoS attack campaign averaged 4.5 million requests per second, putting the bank under attack 70% of the time.

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tl;dr - If a project has been forked or is a fork, you can bruteforce short commit id to see commits from other projects. It doesn't matter if those projects were deleted or made private.

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