Ethereum
The Rise and Fall (and repeat) of Crypto
We’re back!… it’s been a year since the first podcast on Bitcoin and wow…. things have happened. It’s also been about 6 months since the last podcast so if you’re back as ...
AIRA Lab Robonomics Smart Contracts Audit
Positive.com experts have assessed the source code of AIRA Lab Robonomics smart contracts.The final version of the audited contracts can be found in the Airalab/robonomics_contracts Github repository, branch master. The version used ...
No cryptocurrency exchange can fully guarantee security, researchers say
2017 saw many risk-takers rack up small fortunes by riding the Bitcoin wave, but some ended up in tears — their accounts hacked and their crypto-wallets emptied. While you might be tempted ...
Breaking Randomness in the Ethereum Universe [part 1]
It is widely acknowledged that generating secure random numbers on the Ethereum blockchain is difficult due to its deterministic nature. Each time a smart contract’s function is called inside of a transaction, ...
PHDays 8: EtherHack Contest Writeup
This year at PHDays security conference a new contest called EtherHack was held. The goal was to be the first to solve all tasks which featured smart contract vulnerabilities. Here we present ...
Google officially bans all crypto miners from Chrome web store
Cryptocurrency miners have become such a problem that Google is taking a radical measure to protect customers from stealthy miners disguised as legitimate browser extensions – banning any miner that even approaches ...
Big Bitcoin Heist: thieves in Iceland steal Bitcoin-mining equipment worth an estimated $2 million
Authorities in Iceland have detained 11 people in what local media call the “Big Bitcoin Heist.” Thieves reportedly made off with $2 million worth of Bitcoin-mining hardware from data centers on the ...
Predicting Random Numbers in Ethereum Smart Contracts
Ethereum has gained tremendous popularity as a platform for initial coin offerings (ICOs). However, it is used in more than just ERC20 tokens. Roulettes, lotteries, and card games can all be implemented ...
trade.io get their ICO off to a smart start
The team over at trade.io launched their “Trade Token” ICO on Ethereum on 7th December. Business has been brisk, with early investors taking advantage of the lower prices for these ERC-20 compliant ...
Debugging EVM bytecode with radare2
Let’s continue our journey into the internals of EVM bytecode. In the last post we’ve taken a look at a simple contract and how to reverse engineer it with radare2. Today we ...