Researcher developed hidden miner for public Wi-Fi

An anonymous researcher was inspired by the hidden mining incedent in Star Bucks network in December 2017 in Buenos Aires
10 January 2018   1551

Anonymous researcher under nickname "Arnau" published a concept and the associated investigation of the CoffeeMiner attack, which allows to mine through public Wi-Fi networks.

Created for educational purposes, the Arnau's study was inspired by an incident that occurred in December 2017 in Buenos Aires. Local network of Starbucks coffee houses was mining hiddenly with the help of devices connected to the public Wi-Fi network.

The CoffeeMiner attack is designed to spoof the Address Resolution Protocol (ARP) to intercept unencrypted traffic from devices on the same network.

For injection of HTML-code into unprotected traffic, the console program mitmproxy is used. As a result, JavaScript is launched, which draws CPU resources, using them for mining.

CoffeeMiner Concept
CoffeeMiner Concept

In his tests, the researcher used the popular "browser" mining script. Coinhive and extracted the Monero crypto currency.


Specialist notes that such an attack can be easily automated. And although in the current form CoffeeMiner can not work with HTTPS, this problem can be solved, for example, using sslstrip.

Source code is available at GitHub.

Litecoin to Implement Reward Halving Successfully

Block reward was reduced from 25 LTC to 12.5 LTC on block 1,680,000
06 August 2019   139

Today, on August 5, the reward for the Litecoin block for miners was halved.

Halving happened on block 1,680,000, changing the block reward from 25 LTC to 12.5 LTC. The next halving will take place in four years - tentatively on August 2, 2023, as a result of which the block reward will decrease to 6.25 LTC, making digital silver even more scarce.

Litecoin Block Reward Halving Countdown
Litecoin Block Reward Halving Countdown

According to litecoinblockhalf, 75% of the total Litecoin supply has been mined so far. The current inflation rate of the coin is 4.26%, and after four years it should drop to 1.80%.

Many investors were sure that the market had long “digested” the positive expectations in connection with a decrease in cryptocurrency emissions and expected either a sideways price movement or even a decrease in the LTC rate.