The number of crypto mining scripts discovered by security experts continues to increase, especially those ones illegally deployed by hacking servers online.
The experts from Qihoo 360’s Netlab analyzed crypto mining scripts online by analyzing DNS traffic with its DNSMon system. The experts were able to determine which sites load the scripts from domains associated with in-browser mining services.
According to the researchers, 49% of crypto mining scripts are deployed on pornographic related websites.
The study revealed that cryptocurrency mining scripts are also deployed on fraud sites (8%), advertising domains (7%), and cryptocurrency mining (7%).
“0.2% of websites have web mining code embedded in the homepage : 241 (0.24%) in Alexa Top 100,000 websites, 629 (0.21%) in Alexa Top 300,000 websites” reads the analysis published by NetLab.
“Pornographic related websites are the main body , accounting for 49% of these websites. Others include fraud (8%), advertising (7%), mining (7%), film and television (6%) and other categories”
The most used crypto mining script is Coinhive (68%+10%), followed by JSEcoin (9%).
The fact that cryptocurrency mining scripts are most deployed on porn websites is not a surprise because they have a large number of visitors that used to spend a lot of time watching their content.
Mining activities online are rapidly increasing, the following graph shows the mining site DNS traffic trends:
Below the categories of new actors most involved in mining activities:
Advertisers : The mining activity of some websites is introduced by the advertisers’ external chains
Shell link : Some websites will use a “shell link” to obscure the mining site link in the source code
Short domain name service provider : goobo . COM .br Brazil is a short domain name service provider, the website home page, including a short domain name through the service generated when access to the link will be loaded coinhive mining
Pierluigi Paganini is member of the ENISA (European Union Agency for Network and Information Security) Threat Landscape Stakeholder Group and Cyber G7 Group, he is also a Security Evangelist, Security Analyst and Freelance Writer.
Editor-in-Chief at "Cyber Defense Magazine", Pierluigi is a cyber security expert with over 20 years experience in the field, he is Certified Ethical Hacker at EC Council in London. The passion for writing and a strong belief that security is founded on sharing and awareness led Pierluigi to find the security blog "Security Affairs" recently named a Top National Security Resource for US.
Pierluigi is a member of the "The Hacker News" team and he is a writer for some major publications in the field such as Cyber War Zone, ICTTF, Infosec Island, Infosec Institute, The Hacker News Magazine and for many other Security magazines.
Author of the Books "The Deep Dark Web" and “Digital Virtual Currency and Bitcoin”.