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What Are Zero-Knowledge Proofs?
How do you make blockchain and other transactions truly private? With mathematical models known as zero-knowledge proofs...
A week in security (August 26 – September 1)
Last week on Malwarebytes Labs, we analysed the Android xHelper trojan, we wondered why the Nextdoor app would send out letters on behalf of their customers, reported about a study that explores the clickjacking problem across top Alexa-ranked websites, wondered how to get the board to invest in...
Orbit v2.0 - Blockchain Transactions Investigation Tool
Introduction Orbit is designed to explore network of a blockchain wallet by recursively crawling through transaction history. The data is rendered as a graph to reveal major sources, sinks and suspicious connections. Note: Orbit only runs on Python 3.2 and above. Usage Let's start by crawling...
Presidential Candidate Andrew Yang Has Quantum Encryption Policy
At least one presidential candidate has a policy about quantum computing and encryption. It has two basic planks. One: fund quantum-resistant encryption standards. Note: NIST is already doing this. Two, fund quantum computing. Unlike many far more pressing computer security problems, the market...
On Isogenies Verifiable Delay Functions (VDF)
This continues the post frompart 1. In the previous post we discussed about Verifiable Delay Functions. Here is a quick summary of what we discussed in the first part: We covered the definition of Verifiable Delay Functions VDF. We have seen a short history of how this idea slowly developed. We...
Cryptocurrency Hacks Still Growing — What Does That Mean for the Industry?
Though once synonymous with underground networks and black hat hackers, bitcoin and other cryptocurrencies have gone mainstream over the past two years. In 2017, we saw the skyrocket of bitcoin to an all-time high of close to $20,000 followed by a significant decline the following year. But beyon...
CVE-2018-19158
ColossusCoinXT through 1.0.5 a chain-based proof-of-stake cryptocurrency allows a remote denial of service, exploitable by an attacker who acquires even a small amount of stake/coins in the system. The attacker sends invalid headers/blocks, which are stored on the victim's disk...
Blockchain and Trust
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...
Amber Authenticate Protects Video Footage From Deepfakes and Tampering
Many of the body cameras worn by police are woefully vulnerable to hacking and manipulation. Amber Authenticate wants to fix that—with the blockchain...
There's No Good Reason to Trust Blockchain Technology
Opinion: Cryptocurrencies are useless. Blockchain solutions are frequently much worse than the systems they replace. Here's why...
Critical Zcash Bug Could Have Allowed 'Infinite Counterfeit' Cryptocurrency
The developers behind the privacy-minded Zcash cryptocurrency have recently discovered and patched a highly dangerous vulnerability in the most secretive way that could have allowed an attacker to coin an infinite number of Zcash ZEC. Yes, infinite… like a never-ending source of money. Launched i...
Major Zcash Vulnerability Fixed
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 governan...
New Mac Malware Targets Cookies to Steal From Cryptocurrency Wallets
Mac users need to beware of a newly discovered piece of malware that steals their web browser cookies and credentials in an attempt to withdraw funds from their cryptocurrency exchange accounts. Dubbed CookieMiner due to its capability of stealing cookies-related to cryptocurrency exchanges, the...
[SECURITY] Fedora 28 Update: electrum-3.2.4-1.fc28
Electrum is an easy to use Bitcoin client. It protects you from losing coins in a backup mistake or computer failure, because your wallet can be recovered from a secret phrase that you can write on paper or learn by heart. There is no waiting time when you start the client, because it does not...
[SECURITY] Fedora 28 Update: electron-cash-3.3.4-1.fc28
Electron Cash is an easy to use Bitcoin Cash client. It protects you from l osing coins in a backup mistake or computer failure, because your wallet can be recovered from a secret phrase that you can write on paper or learn by heart. There is no waiting time when you start the client, because it...
Ethereum Classic (ETC) Hit by Double-Spend Attack Worth $1.1 Million
Popular cryptocurrency exchange Coinbase has suspended all transactions of Ethereum Classic ETC—the original unforked version of the Ethereum network—on their trading platforms, other products and services after detecting a potential attack on the cryptocurrency network that let someone spend the...
The Advantages of a More Secure and Safer Blockchain
By Waqas Blockchain technology has many uses and advantages over other types of ledger-based technology. One aspect of blockchain technology that is especially valuable today is the ability to securely and safely transmit data to and from two or more parties. This is particularly important when t...
[SECURITY] Fedora 29 Update: electron-cash-3.3.4-1.fc29
Electron Cash is an easy to use Bitcoin Cash client. It protects you from l osing coins in a backup mistake or computer failure, because your wallet can be recovered from a secret phrase that you can write on paper or learn by heart. There is no waiting time when you start the client, because it...
Using the blockchain to create secure backups
“Oh no! I’ve got a ransomware notice on my workstation. How did this happen?” “Let’s figure that out later. First, apply the backup from a few minutes ago, so we can continue to work.” Now that wasn't so painful, was it? Having a rollback solution or a recent backup could make this ideal post...