According to Wired, Signal is adding support for the cryptocurrency MobileCoin, “a form of digital cash designed to work efficiently on mobile devices while protecting users’ privacy and even their anonymity.” Moxie Marlinspike, the creator of Signal and CEO of the nonprofit that runs it, describes the new payments feature as an attempt to extend … Read More “Signal Adds Cryptocurrency Support” »
Category: cryptocurrency
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Security researchers have recently discovered a botnet with a novel defense against takedowns. Normally, authorities can disable a botnet by taking over its command-and-control server. With nowhere to go for instructions, the botnet is rendered useless. But over the years, botnet designers have come up with ways to make this counterattack harder. Now the content-delivery … Read More “Illegal Content and the Blockchain” »
Mike Stay broke an old zipfile encryption algorithm to recover $300,000 in bitcoin. DefCon talk here. Powered by WPeMatico
Really interesting research: “An examination of the cryptocurrency pump and dump ecosystem“: Abstract: The surge of interest in cryptocurrencies has been accompanied by a proliferation of fraud. This paper examines pump and dump schemes. The recent explosion of nearly 2,000 cryptocurrencies in an unregulated environment has expanded the scope for abuse. We quantify the scope … Read More “Cryptocurrency Pump and Dump Scams” »
A malicious Chrome extension surreptitiously steals Ethereum keys and passwords: According to Denley, the extension is dangerous to users in two ways. First, any funds (ETH coins and ERC0-based tokens) managed directly inside the extension are at risk. Denley says that the extension sends the private keys of all wallets created or managed through its … Read More “Chrome Extension Stealing Cryptocurrency Keys and Passwords” »
The US Department of Justice unraveled a dark web child-porn website, leading to the arrest of 337 people in at least 18 countries. This was all accomplished not through any backdoors in communications systems, but by analyzing the bitcoin transactions and following the money: Welcome to Video made money by charging fees in bitcoin, and … Read More “Dark Web Site Taken Down without Breaking Encryption” »
Expandpass is a string expansion program. It’s “useful for cracking passwords you kinda-remember.” You tell the program what you remember about the password and it tries related passwords. I learned about it in this article about Phil Dougherty, who helps people recover lost cryptocurrency passwords (mostly Ethereum) for a cut of the recovered value. Powered … Read More “Cracking Forgotten Passwords” »
Someone is stealing millions of dollars worth of Ethereum by guessing users’ private keys. Normally this should be impossible, but lots of keys seem to be very weak. Researchers are unsure how those weak keys are being generated and used. Their paper is here. Powered by WPeMatico
In his 2008 white paper that first proposed bitcoin, the anonymous Satoshi Nakamoto concluded with: “We have proposed a system for electronic transactions without relying on trust.” He was referring to blockchain, the system behind bitcoin cryptocurrency. The circumvention of trust is a great promise, but it’s just not true. Yes, bitcoin eliminates certain trusted … Read More “Blockchain and Trust” »
Zcash just fixed a vulnerability that would have allowed “infinite counterfeit” Zcash. Like all the other blockchain vulnerabilities and updates, this demonstrates the ridiculousness of the notion that code can replace people, that trust can be encompassed in the protocols, or that human governance is not ncessary. Powered by WPeMatico