BlockThreat - Week 21, 2019

BestMixer | BCH | Cryptopia | Wallets

This week a number of news sources reported a new twist to the BCH hard fork incident where the previously reported node software exploit was followed by a reorganization attack targeting a blocks mined by a malicious miner. In other news, Cryptopia exchange attackers are attempting to cash out at an exchange, a backdoor discovered in a paper wallet website, and a reported uptick in fake wallet software on Android platform.

News:

• The FIOD and the Public Prosecution Service take money laundering machine for cryptocurrencies offline - a popular cryptocurrency tumbler, Bestmixer[.]io, taken down in a joint effort between McAffee and Dutch FACT (Financial Advanced Cyber Team).

Hacks:

• The Bitcoin Cash Hardfork – Three Interrelated Incidents - a great writeup on the previously missed incident on the BCH network which occurred on May 15th, same day as the hard fork event and the 0day incident described in last week’s newsletter. In the technical report, BitMex Research reports a two block reorga…