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Cryptojacking is a distinct form of cyber attack in which a hacker hijacks a target’s processing power in order to mine cryptocurrency on the hacker’s behalf.

Published: 13th October 2018 08:01 AM  |   Last Updated: 13th October 2018 08:01 AM   |  A+A-

Google, Internet scam, Malware

Image for representational purpose only.

Express News Service

HYDERABAD: Internet search giants like Google and Bing currently blacklist only about 17 per cent of the websites infected by malware, according to a study, which analysed more than 6 million websites with malware scanners. This assumes importance because many users still rely on search engines to alert them while entering malicious websites. But they seem to be at a high risk. 

The study, SiteLock Website Security Insider Q2 2018, noted that “the average number of malicious files removed from infected sites decreased by 28 per cent from the previous quarter.” This does not mean attacks are decreasing, instead, attackers are using smaller and sneakier attack kits, say experts. But, how? 

READ| Google India FY'18 revenue rises 29 per cent to Rs 9,338 crore, profit up 33 per cent

Just as how anti-malware and antivirus software programs improve with time, attacks have also gotten stronger. “As malware scanning technology improves, more conspicuous attacks such as SEO spam and defacements will continue to make way for sneakier and more profitable attacks, like backdoors used to deploy Javascript and cryptominers...” the study said.

“As such, these malicious files are less likely to be detected and removed from the compromised site.” Another important finding of the study is that incidents of cryptojacking have doubled in the second quarter of this year. Cryptojacking is a distinct form of cyber attack in which a hacker hijacks a target’s processing power in order to mine cryptocurrency on the hacker’s behalf.

“Additionally, there was a 16 per cent increase in the prevalence of malicious Javascript files during the quarter. This new trend is not surprising because many cryptojacking scripts use Javascript kits to deploy and collect the mined cryptocurrency,” the study said. 

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