Collaborate Disseminate
How long does it take iPhone 7 (iOS 12.2) to overwrite the data of recently deleted photos/videos?
Does it happen instantly right after I take another photo/video (the new photo replaces the deleted one’s data pointer, and the deleted on… Continue reading iPhone data overwrite
I have been getting paranoid lately and decided to ask for your insight on this issue. A year ago, I took photos of some personal information (cc, passport, etc), and deleted them a month later, along with some videos that reveal my face a… Continue reading Can the photos/videos I deleted a year ago can still be on my iPhone or on the Internet?
My mother’s neighbor installed a strange-looking device. They don’t get along well, so she can’t just ask what it is.
What is it? Could it be a camera with microphone?
Continue reading Identify the device at the neighbor’s window [closed]
I just wanna ask if is it more secure (rather than using windows 10 host) to use windows 10 in(VirtualBox), because before I’ve been installing crack software visiting a dangerous site (activation key something like that) but not that much… Continue reading what is secure for banking payment and crypto thing? (host os OR guest os)
I am legally obliged to distribute a document (probably by email, probably saved as MS word, or a PDF) to several hundred recipients.
The recipients are legally obliged to keep it confidential. However, based on past experience I’m pretty… Continue reading Document security – how to find who’s leaked a confidential document?
It truly feels like we are living in an “afterworld”, long past the era when smart, intelligent, real men and women worked on things that really did matter. I’m talking about Enigma, Lorenz, Collossus, etc. The cipher machines and code-bre… Continue reading How can any intelligent person believe that PGP, HTTPS or anything else we have today is secure, given history and logic?
I remember hearing or seeing a documentary or something a “long” time ago, likely in the early 2000s, about how a lot of Americans (USAians) refused to show an “id” even when voting, where it might possibly be justified to demand some form… Continue reading How did (in particular) Americans just go along with the concept of having to own and show "photo id" everywhere? [closed]
Although this question may be out of scope, I’m wondering if there’s a reliable way to apply a “digital signature” to real life objects in order to prove your ownership of them to a degree.
As an example, let’s assume I bought my own offi… Continue reading "Digital" signatures on real life objects
As far as of my knowledge goes, keyboard don’t store keystrokes in their memory by default (excluding those bundled with keyloggers). The thing that comes to my mind though is that some keyboards do have some built-in memory for storing us… Continue reading Can I safely sell a used keyboard without risk of new owner recovering previous inputs?
Arbitrary "M-of-N" secret-sharing protocols are a well-studied topic in cryptography, and are apparently so useful that Bitcoin Script devoted a whole opcode to them.
In this blog post, I write:
Suppose we run a bank, and suppos… Continue reading Physical mechanical examples of "M-of-N" locks?