Home Malware Programs Browser Hijackers JS/ClickJack

JS/ClickJack

Posted: February 9, 2015

Threat Metric

Ranking: 5,852
Threat Level: 1/10
Infected PCs: 742
First Seen: February 9, 2015
Last Seen: October 12, 2023
OS(es) Affected: Windows

JS/ClickJack is JavaScript content typically found on hacked or otherwise threatening website. Like most PC threats of similar category, JS/ClickJack may be used to expose your browser to attacks that could compromise your machine with the automatic installation of threats. Ordinarily, you should assume that sites that trigger JS/ClickJack warnings are toxic. JS/ClickJack warnings that occur on your PC should be considered calls to arms to scan the system for threat infections.

A Hijacking of Your Browser Through Your Clicks

You can consider JS/ClickJack as a sub-variant of a browser hijacker, and JS/ClickJack may be installed on an individual website, or installed on your PC (and, accordingly, injecting itself into your browser). In the former case, JS/ClickJack may be associated with inadequately maintained websites that use outdated security platforms or compromised plugins. Prominent Web platforms targeted in this fashion include WordPress and Joomla.

JS/ClickJack uses JavaScript to 'hijack' a computer user's clicks on harmless Web elements, such as buttons for logging in to your account. Then, JS/ClickJack launches additional, threatening content, which may or may not be visible. Invisible items may include transparent iFrames that launch attacks, while visible ones could launch pop-up advertisements or phishing attacks that request your information. Browser security software and anti-script add-ons frequently can identify both forms of click hijackings, along with many versions of JS/ClickJack.

Since JS/ClickJack is a generic transporter of threatening software that may transport a range of diverse threats, any PC exposed to JS/ClickJack should be assumed to suffer from a potential infection. Closing your browser and scanning your system is the first security procedure malware researchers would encourage during encounters with JS/ClickJack or other Web-based threats.

Shoving JS/ClickJack Back in the Box

JS/ClickJack particularly is a concern for website administrators, who should take immediate actions to resolve any reports of traffic receiving JS/ClickJack from their domains. Removing unsafe site plugins and updating your site maintenance software can provide the simplest boosts in security. However, if your site has been compromised by other methods, you may need to inspect its code for manual script insertions to delete. In rare instances, a JS/ClickJack warning may be a false positive triggering off of falsely-flagged code. In this case, it is better to communicate with the relevant security company and request an update to their threat database.

Besides the traditional means of protecting themselves from Web attacks, PC users also should watch for signs of JS/ClickJack attacks occurring unrelated to any single website. Such warnings may be symptomatic of an infection already on your computer. In that scenario, rather than using anti-script defenses to block the symptom of the problem, you should use anti-malware tools to scan your PC for unwanted software and browser modifications. You may find other, locally-stored versions of JS/ClickJack in your Temporary Internet Files or Local Application Data folders.

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