Threat Scorecard

Threat Level: 20 % (Normal)
Infected Computers: 71
First Seen: January 4, 2023
Last Seen: June 19, 2023
OS(es) Affected: Windows

CyberBlock is a browser extension that advertises itself to users as one of the most powerful ad-blocking applications out there. In addition, the application is apparently the most advanced ad-blocker when it comes to YouTube specifically. Despite all of its claims, users who install CyberBlock will soon discover that some advertisements still manage to get through. Indeed, CyberBlock possesses adware capabilities and is tasked with the delivery of advertisements to the device it is present on. 

Adware, or PUPs (Potentially Unwanted Programs) in general, often rely on deceptive tactics to get users to download and install them. Some of the most widespread methods include 'bundling' (the addition of the PUP to the installation package of another more legitimate and desirable software product) or fake installers/updates claiming to be for some entirely unrelated and easily recognizable applications.  

One of the main risks associated with adware applications, such as CyberBlock, is that the advertisements they show may promote dubious or even unsafe destinations. Users could see promotions for fake giveaways, phishing pages, technical-support tactics, or other online schemes. Users also may be taken to age-restricted sites, shady betting/gaming platforms, etc. 

While active on the user's device, adware applications also may collect various data to be used in the delivery of more targeted advertisements. However, the collected information also could be sold to third parties that may exploit it in any way they see fit, leading to potential security and privacy risks.


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