Malicious ads and website reputation Malvertising is one of the most profitable businesses in the cyber hacking industry. Exploiting website inventory is highly beneficial for cyber criminals as it is then sold to redirect traffic to gambling, adult, pharma and similar kinds of websites. Needless to say, that its damage to both publishing websites and advertising network reputation is huge. Ideally, Web Admins are the ones responsible for checking the Ads that their site is showing.

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Website Defacement is just a click of a button In the past few months, Quttera malware researchers encounter a significant rise in website defacements by hackers. Government websites, among the others, were under such cyber-attack and thus getting a lot of attention and concern from the public. Interesting fact that, in some cases, hacker groups used defacement as their "cyber branding". The number of such sites being defaced is then used as a global ranking of a responsible hacker group.

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Security tools serving good and bad This is a python script used by Cyber Security Analysts to check for vulnerabilities in website . Like any other network security tool, it is being utilized by many, meaning it was also being utilized by the bad guys a.k.a "hackers". While we were browsing the dark web, we stumbled upon a hacking forum where you need to take an exam before you could join their group.

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RedKit Malware Still Alive RedKit Malware RedKit malware as detected by Online Malware Scanner Background Back in 2013, we posted about RedKit infecting significant number of websites. It appears that, three years later, the statistics of the websites submitted to online malware scanner show the revive of this malware among infected websites. Malicious action Malicious iframes are often used to distribute malware hosted on external web resources(websites). Malware entry The URL in src of the iframe hosts another ~15 similar HTML pages (mzcf.html) leading to drive-by-download attack.

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Traffic Distribution System (TDS) On Infected WebsitesThis malware technique is widely used to monitor and redirect traffic from compromised website to malicious content or paid referrals. In past, we highlighted similar cases in our blog: Blacklisted website used to drive traffic to ‘penny stock website’ Malicious TDS flow Malicious Traffic Distribution System diagram BackgroundThreatSign! client received complaint from his customer that his website got blocked when accessed from Google Chrome. Malware detailsUpon internal malware scan the infection was identified inside WordPress theme.

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What is Cross Site Scripting (XSS)? May 26th 2016 jetpack disclosed a XSS vulnerability discovered in their popular plugin. We would to take this opportunity and describe what is XSS. Cross Site Scripting or XSS attack refers to injection of the malicious code or malicious payload into pages of legitimate website. Further, when these compromised pages are visited by website users, the injected malicious code (or payload) is executed by client-side application (visitor's web browser) and performs the actual malicious action such as: redirecting visitor to another website, download and installation of malicious code, showing adult ads and etc...

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Obfuscated malicious JavaScript code generated hidden iframe to drive traffic to customer website Background Online Website Malware Scanner has identified malicious JavaScript code injection in the scanned website. Usually, such malicious obfuscated JavaScript code is used to build malicious iframe invisible to the website user and which downloads content from remote malware distributor. This website is located in Ukraine and it is used by Traffic Direction System (TDS) managed by malicious domain revmihyr[.]ru as referrer to 'penny stock' website.

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