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Currency Ads

Posted: September 28, 2015

Threat Metric

Threat Level: 8/10
Infected PCs: 166
First Seen: September 28, 2015
Last Seen: May 22, 2023
OS(es) Affected: Windows

Currency is an adware application that may be distributed along with free software. Currency modifies arbitrary Web pages during their loading times to force their inclusion of additional sponsored content, such as hotlinks to Currency's affiliates. This function is a minor security risk, in addition to potentially harming your browser's stability or performance, which is why malware experts always recommend you removing Currency with an anti-adware product.

When Your Browser's Words Turn into Other People's Currency

Most corporations with even tangential relationships with the software industry have acknowledged the hard reality of the billions of dollars of profit in adware. However, such profits may not be backed up by distribution models that encourage the intentional installation of advertising-specialized software. Instead, adware programs utilize methods of installation skirting around the PC owner's consent in various ways. Currency is a recent adware product that may show off one of the most popular strategies: bundling with other freeware.

Currency was confirmed for being bundled with a limited edition of the Chrome Notepad extension recently, a version that has since removed itself from circulation. The Chrome Notepad is, by itself, an extension dedicated to syncing browser text notes using built-in Chrome features. However, Currency specializes in the entirely unrelated 'feature' of injecting advertisements into Chrome Web pages.

Currency may modify your Web pages as Chrome loads them by injecting extra HTML links. These links may be keyed to keywords already present on the Web page. Currency advertisements' affiliate links are contextual in nature, such as offering advertisements for anti-adware software from links related to 'advertising software' or 'pop-ups.' may be the case, Currency doesn't provide any settings or controls for disabling its injected links from these unrelated Web pages.

Tightening Currency's Coin Purse

Currency has not been seen delivering threatening advertisements or similarly hostile content to any PC user intentionally. Despite that fact, most PC users should strive for reducing their contact with unnecessary advertising networks, particularly those promoted by software via suspiciously brief distribution campaigns. Content from Currency advertisements may be an easy and effectively unfiltered gateway into exposure to attacks such as fake software patches and phishing tactics, as well as common advertisements.

Malware analysts only have verified Currency bundles being included with the version 3.8.5 of Chrome Notepad, and other versions of that extension may be free of this adware. Some PC users also have reported the presence of automatic installations for the Chrome Remote Desktop apps in conjunction with this adware. If you have any problems with removing Currency or its symptoms from Chrome, use anti-adware products to scan your PC. Keep all unnecessary programs (including your Web browser) closed until the scans are complete. Currency hasn't been seen being installed to other browsers, although there are no technical reasons why its campaign couldn't extend to Internet Explorer, Firefox, Edge or even Apple's Safari.

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