Ethernet place the JSON-RPC Interface to a variety of stolen currency technique big secret-vulnerability warning-the black bar safety net

In 2010, Laszlo the use of 10,000 bitcoin to buy a $ 25 pizza is considered bitcoin in the real world in the first transaction. In 2017, the block chain technology as the digital currency's price soared and standing on the air above. Who could have imagined that in 2010 that two pieces of pizza,...

Full Disclosure of Highly-Manipulatable, tradeTrap-Affected ERC20 Tokens in Multiple Top Exchanges(CVE-2018-11446)

Update: 2018-06-12 The BMB BMB contract 0x0e935e976a47342a4aee5e32ecf2e7b59195e82f is NOT affected by tradeTrap. We sincerely apology for mistakenly listing it as a vulnerable ERC20 token. Quoted from our last blog 1, “publicly tradable ERC-20 tokens have considerable high market value. Various...

EPoD: Ethereum Packet of Death (CVE-2018-12018)

PeckShield has so far discovered quite a few critical smart contract vulnerabilities. Besides smart contracts, the Ethereum ecosystem also includes other various components that are equally exposed to possible exploitation. Obviously, one such component is the core of Ethereum, i.e., the underlyi...

New evilReflex Bug Identified in Multiple ERC20 Smart Contracts (CVE-2018-12702, CVE-2018-12703)

Update: 2018-06-24 With swift, coordinated response from Huobi.pro, we appreciate the announcement 11 on suspending the deposits and withdrawals of affected tokens! Our vulnerability-scanning system at PeckShield has so far discovered several dangerous smart contract vulnerabilities batchOverflow...

DYchain Integer Overflow Vulnerability

DYchain DYC is an Ether-based digital currency. An integer overflow vulnerability exists in the 'mintToken' function, the implementation of smart contracts in DYC. An attacker can exploit this vulnerability to set the balance of any user to an arbitrary value...

New allowAnyone Bug Identified in Multiple ERC20 Smart Contracts (CVE-2018-11397, CVE-2018-11398)

Our vulnerability-scanning system at PeckShield has so far discovered several dangerous smart contract vulnerabilities batchOverflow1, proxyOverflow2, transferFlaw3, ownerAnyone4, multiOverflow5, burnOverflow6, ceoAnyone7. Some of them could be used by attackers to generate tokens out of nowhere ...

The block chain smart contracts vulnerability, wanted to say your not easy-bug warning-the black bar safety net

In recent days, the block chain platform EOS smart contract vulnerability event once again put on the block chain safe to push on the cusp. An attacker can release contains malicious code“smart contract”, after a series of after the operation, the control block chain, all nodes in the network, an...

New multiOverflow Bug Identified in Multiple ERC20 Smart Contracts (CVE-2018-10706)

Our vulnerability-scanning system at PeckShield has so far discovered several dangerous smart contract vulnerabilities batchOverflow, proxyOverflow, transferFlaw, ownerAnyone. Some of them could be used by attackers to generate tokens out of nowhere while others can be used to steal tokens from...

New burnOverflow Bug Identified in Multiple ERC20 Smart Contracts (CVE-2018-11239)

Our vulnerability-scanning system at PeckShield has so far discovered several dangerous smart contract vulnerabilities batchOverflow1, proxyOverflow2, transferFlaw3, ownerAnyone4, multiOverflow5. Some of them could be used by attackers to generate tokens out of nowhere while others can be used to...

New ownerAnyone Bug Allows For Anyone to ''Own'' Certain ERC20-Based Smart Contracts (CVE-2018-10705)

This morning, our vulnerability-scanning system at PeckShield identified a new vulnerability named ownerAnyone in certain ERC20-based smart contracts such as AURA, which is deployed by a decentralized banking and finance platform – AURORA. This bug, if successfully exploited, might introduce the...

Aurora IIDXM Design Vulnerability

Aurora IDEX Membership IDXM is a decentralized trading system for Ether ECR-20 tokens. A security vulnerability exists in the implementation of Owned smart contracts in Aurora IIDXM. An attacker could exploit the vulnerability to gain ownership of the contract and change the variables...

Security Vulnerabilities in Smart Contracts

Interesting research: "Finding The Greedy, Prodigal, and Suicidal Contracts at Scale": Abstract: Smart contracts -- stateful executable objects hosted on blockchains like Ethereum -- carry billions of dollars worth of coins and cannot be updated once deployed. We present a new systematic...

Blockchain technology: not just for cryptocurrency

Imagine a place where you can safely store all your personal information and only you decide who has access to it. You can choose which parts of that information you want to share, and you can just as easily revoke that access. If this place ever comes into existence, I am willing to bet it will ...

Harassment scandals, Sheldon Cooper, Black Mirror and blockchain

Lots of good jokes in a popular TV show The Big Bang Theory are related to Sheldon Cooper's bureaucracy in interpersonal relationships: all these "roommate agreement", "relationship agreement", etc. However, because of these endless harassment scandals in media, now it seems like a best practice ...

Explained: blockchain technology

Last week, we talked about what cryptocurrency is and why cybercriminals love it. We mentioned that cryptocurrency was founded on a technology called blockchain, which is a tight system that, when applied correctly, is more secure than most other financial transactions. In this post, we'll explai...