Category: Cryptanalysis

Bitcoin is the world's first decentralized digital currency, and it has revolutionized the way we think about money. One of the most fascinating aspects of Bitcoin is the vast array of utilities that have been developed to support it. These utilities are designed to help users interact with the Bitcoin network in a safe and secure manner,…

In this article we will cover a broad topic: “Dust Attack” known as: "Dusting Attack"or "Crypto Dust". Perhaps every cryptocurrency user or holder of a large amount of BTC, ETH coins replaced the receipt of an insignificantly small amount of coins in satoshi on their cryptocurrency wallet , this receipt is disguised as "Donate", but in fact it is a whole mathematically refined system for taking…

In this article, we will use the classification of common attack patterns from the cybersecurity resource [CAPEC™] . The “Padding Oracle Attack” was first discussed on Wallet.dat back in 2012 (on the vulnerability management and threat analysis platform “VulDB” ) . The problem of the most popular Bitcoin Core wallet affects the work  AES Encryption Paddingin the file Wallet.dat The technical details of this attack are known: https://en.wikipedia.org/wiki/Padding_oracle_attack An attacker can effectively decrypt…

In this article, we will focus on a smartphone application iOS and Android the popular Bitcoin Wallet that supports fast payments through (Lightning network) BLW: Bitcoin Lightning Wallet . Unfortunately, many autonomous nodes of the open source mobile application from LNbits Node Manager and Core Lightning are exposed to a HIGH RISK of losing all funds in various cryptocurrency coins. Developer David Shares from the Japanese company Bitcoin Portal has published many documents .…

Slowmist researchers conduct regular research into the security of the Bitcoin blockchain . They disclosed a vulnerability in the Libbitcoin Explorer 3.x library , which allowed attackers to steal more $ 900 000 from Bitcoin Wallets ( BTC ) users. According to analysts, this vulnerability may also affect users  Ethereum, Ripple, Dogecoin, Solana, Litecoin, Bitcoin Cash и Zcash,who use it Libbitcoin to create accounts. Researchers gave the code name for this vulnerability " Milk Sad " Было…

In this article we will look at a series of web server software vulnerabilities discovered in the  GNU Bash program  . Many Internet services , including Bitcoin blockchain web servers, use Bash to process some requests, for example when executing  CGI scripts . The vulnerability allows an attacker to execute arbitrary commands by gaining unauthorized access to computer systems, which allows the attacker to extract private…

In this article, we will look at a bug in the DAO code. The hacker exploited a bug in the code of the DAO and stole more or less $50 million worth of ether. I will focus here only on the main technical issue of the exploit: The fallback function. For a more detailed and advanced recount…

Following the article: “Solidity Forcibly Send Ether Vulnerability to a Smart Contract continuation of the list of general EcoSystem security from attacks”. In this article, we will continue this topic related to vulnerabilities and traps. In the process of cryptanalysis of various cryptocurrencies, we are increasingly getting loopholes and backdoors. Honeypots work by luring attackers with a balance stored…

Earlier we touched on the topic: "Improving the overall security of the ecosystem from attacks on smart contracts". In this article, we will continue to develop this painful topic of ecosystem security. Occasionally, it is unwanted for users to be able to send Ether to a smart contract. Unfortunately for these circumstances, it's possible to bypass a…

Bitcoin is an example of a decentralized network. There are no people or organizations that control it. This is part of its architecture. For many, the creation of Bitcoin Cash under the pretext that blocks with more memory would be beneficial is seen by most of the community as an example of an attack on decentralization. dependency on the stakeholder network…