web mining
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In 2018, web miners, applications that run in a user’s browser and mine cryptocurrencies for profit, could have consumed as much as 18.8GW of electric power.

This is according to Kaspersky research on the economic and environmental impact of web mining.

The assumption makes it comparable to the power consumption rate of Poland and means the environmental impact of web mining is close to 800 tons of CO2 emissions.

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Web mining or browser-based cryptojacking is a threat that many users might be regularly subjected to without being aware.

They may only notice if they check a web page source code or notice that certain web resources are overloading their devices when opened.

Web mining is an alternative method of cryptocurrency mining, which uses website visitors to achieve its goal.

Website owners convert the capacity of their users’ devices into cryptocurrency while the user's browser is on or running in the background.

In certain cases, however, web pages notify users of their exposure to this scheme and ask for their consent, explaining that web mining is being performed to monetise the web page without showing annoying ads or paid subscriptions.

Is web mining an innocent activity?

Web mining is usually considered an innocent activity that doesn’t result in a significant loss of money and only consumes a small amount of energy.

To debunk these myths, researchers analysed statistics in reports from Kaspersky security solutions that prevented web mining activity in 2018. They came to the conclusion that, while individual losses might be considered insignificant, the global impact is surprisingly grim.

According to these calculations, the amount of energy consumed through web mining could be up to 1,670MWh, unless the web page blocked the code responsible for mining initiation.

If converted into carbon dioxide emissions at the global average International Energy Agency levels this is equivalent to around 800 tons of greenhouse gas (CO2) emitted into the atmosphere in 2018.

The electricity fees for such a high level of energy could range from a few hundred thousand dollars to half a million dollars, depending on the country of origin. The amount of energy needed to support this would be more than three times the output of the Chernobyl nuclear power plant the year before its infamous incident.

“There are a lot of legal and technical initiatives aimed at minimising the impact of web mining and we can see a significant decrease in activity in 2019,” said Alexey Malanov, security researcher at Kaspersky.

However, as long as there are economic benefits to web mining there will be attempts to overload the processors of unsuspecting victims, noted Malanov.

“And, perhaps even more importantly, this is a rare type of cyber-threat but creates a significant negative environmental footprint. This means that preventing operations such as these from happening is not only a question of cybersecurity, but also something that indirectly helps to save the environment,” stated Malanov.

“This is definitely an unexpected takeaway, but one that is worth remembering when assessing the severity of web mining. This is why we urge everyone to protect themselves with a security solution that checks web pages for the script that initiates web mining and stops it,” Malanov added.

Recommendations to avoid your device being used for web mining

  • Pay attention to your computer’s performance: if your PC experiences lag and freezes, it can be a sign of malicious activity.
  • Check if your system gets noticeably hotter – this is a significant sign that the processor is being perused, which is very typical for web miners.
  • Start using a reliable security solution that delivers protection from web miners.
  • If you are a business, a dedicated corporate cybersecurity product can help. For example, a web threat protection that ensures web pages visited by employees don’t contain malicious objects.