Bk-coretag.js

Bk-coretag.js is a JavaScript file that has been implicated for involvement in browser-hijacking attacks that subvert your Web-browsing settings automatically. These attacks may involve the display of relatively harmless advertisements, but also may include content that's threatening to your computer, such as an installer process for unwanted software. Currently, malware researchers have found insufficient evidence to label sites linked to Bk-coretag.js pop-ups as threatening, but they do recommend using anti-malware tools to remove Bk-coretag.js pop-ups and other, recurring browser problems.

When Advertisement Trackers Come Calling to Your PC

Although its frequent occurrence in browser pop-ups may lead you into mistaking Bk-coretag.js for a website, Bk-coretag.js is a JavaScript file, rather than a Web domain. Besides its common use in sophisticated Web content, JavaScript also may be exploited to attack your computer, and malware experts often see cases of Bk-coretag.js installing threatening software (often through the attacks of exploit kits, such as Blackhole Exploit Kit or Sweet Orange). Because of this ever-present security risk, attempts to launch Bk-coretag.js, or attempts to launch Bk-coretag.js under particularly suspicious circumstances, should be considered as possible attacks against your computer.

Bk-coretag.js most recently was identified as one part of a pop-up advertising effort related to the tags.bkrtx.com tracking domain. This domain tracks the basic traffic-based statistics for online advertisements, such as determining an advertisement viewer's IP address or which site they used to trigger the pop-up advertisement. Sadly, pop-ups are not always a matter of the user's consent, and current Bk-coretag.js pop-ups through bkrtx.com also have been seen being launched by browser hijackers that load arbitrary Web addresses. Only Internet Explorer has been confirmed to be targeted by Bk-coretag.js hijackers, at this article's date of authoring.

Getting to the Heart of the Trouble with Bk-coretag.js Pop-Ups

Bk-coretag.js pop-ups, like all JavaScript pop-ups, hold the possibility of loading unsafe content that could compromise your PC by installing threats, as well as the relatively unthreatening potential for unwanted tracking or extra advertisements. As long as Bk-coretag.js pop-ups appear only on appropriate websites, they do not need to be considered attacks against your computer. However, malware experts recommend watching for Bk-coretag.js hijackers that generate Bk-coretag.js pop-ups with no regard for the site you are trying to visit. You should resolve these attacks with a trustworthy PC security solution, such as an anti-malware suite.

Bk-coretag.js hijackers are not tied to identifiable browser add-ons or other software-based products, and malware researchers have not been able to confirm their current distribution models. These facts lead towards the potential for Bk-coretag.js hijackers being installed automatically, and general anti-malware scans for any suspicious file you are thinking of launching could be the only thing stopping your browser from loading an extra JavaScript file.
The Bk-coretag.js hijack campaign has been ongoing since at least March of 2014, making Bk-coretag.js a relatively recent development in the industry of threatening and unwanted software.