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  • Security firm Sucuri analyzed tens of thousands of compromised websites

Security firm Sucuri analyzed tens of thousands of compromised websites

Pierluigi Paganini September 26, 2016

Security firm Sucuri published a detailed study, titled Hacked Website Report for 2016/Q2, on compromised websites on the Internet.

According to the security expert Daniel Cid from Sucuri, at least 15,769 WordPress websites have been compromised this year.

Sucuri has published a report, titled Hacked Website Report for 2016/Q2, related compromised websites on the web.

The experts analyzed 21,821 sites, 3099 of which were running the Joomla! CMS, 15,769 WordPress, and the remaining Magento, Drupal, vBulletin, and Modx.

compromised websites sucuri report-q2-2016_cms-infection

The researchers focused their research on out-of-date software found on compromised websites discovering that WordPress installations were out-of-date 55% of the time while Joomla! (86%), Drupal (84%), and Magento (96%).

The vast majority of the website (roughly 75 percent) were backdoored by crooks that used them to deliver malware, target visitors, control botnets, and run further attacks.

Google has already blacklisted 52 per cent of the total compromised sites analyzed by the Sucuri, but 48 percent went undetected demonstrating that the backdoors used by crooks are hard to detect.

The experts added that Norton Safeweb was able to detect only 38 percent of compromised websites, while McAfee SiteAdvisor detected 11 percent of them.

“Per our data, 18% of the infected websites we analyzed were blacklisted, which means that 82% of the infected websites we worked on were not flagged. The most prominent blacklist was Google Safe Browsing with 52% of blacklisted sites. Here is a more complete distribution of the blacklist APIs we monitored:” reported the Sucuri report.

Sucuri also highlighted that most websites were hacked due to vulnerable or poorly configured extensions.

Below key findings of the Sucuri Report:

Some quick takeaways that you might find interesting:

  • WordPress continues to lead the infected websites we worked on (at 74%), and the top three plugins affecting that platform are still Gravity Forms, TimThumb, and RevSlider.
  • WordPress saw a 1% decrease in out-of-date core software and infected websites, while Drupal had a 3% increase. Joomla! and Magento website deployments continue to show the most out of date instances of any platform.
  • New data points show that on average, WordPress installations have 12 plugins, and the report provides a list of the most popular plugins within our set of compromised sites.
  • New data points were introduced showing what percentage of infected websites were blacklisted. Only 18% were blacklisted, and Google made up 52% of that grouping (or 10% of the total infected sites).
  • Analyzing the malware families showed that SEO spam continues to be on the rise, increasing to 38% this quarter (a 6% increase) and backdoors rose to 71%of compromised sites.

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Pierluigi Paganini

(Security Affairs – Compromised Websites, CMS)


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15 769 WordPress backdoor CMS Compromised Websites Drupal Joomla CMS Magento vBulletin

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