Calculator Tab

During a comprehensive investigation of suspicious websites, cybersecurity researchers identified the Calculator Tab browser extension. While it claims to offer a calculator widget for browsers, this extension actually functions as a browser hijacker. Calculator Tab modifies browser settings to promote the fake search engine searchfst.com through redirects

Calculator Tab Overwrites Important Browser Settings to Promote Dubious Addresses

The Calculator Tab browser extension makes significant alterations to browsers by changing their default search engines, homepages, and new tab pages. Consequently, users may find themselves redirected to searchfst.com when they perform a search query or open a new browser tab. Despite its appearance, searchfst.com is categorized as a fake search engine because it lacks the capability to generate search results independently.

Typically, websites of this nature redirect users to legitimate search engines. In this instance, searchfst.com directs users to the Bing search engine. It's worth noting that redirection destinations could vary based on factors such as user geolocation.

Browser hijackers, like Calculator Tab, often employ tactics to ensure persistence, making it difficult for users to remove them. They may deny access to removal-related settings or revert changes made by the user in an attempt to maintain control over the browser.

Moreover, software falling into this category typically incorporates data-tracking functionalities, which may also apply to Calculator Tab. This could involve the collection of various types of sensitive information, including visited URLs, viewed pages, search queries, cookies, login credentials, personal details, financial information, and more. Such data is often sold to third parties or exploited for profit through various means.

Browser Hijackers and PUPs (Potentially Unwanted Programs) Are Often Installed Stealthily on Users' Devices

Browser hijackers and Potentially Unwanted Programs (PUPs) often employ deceptive distribution tactics to stealthily install themselves on users' devices. Here's how:

• Bundling with Freeware: Browser hijackers and PUPs are frequently bundled with legitimate freeware or shareware programs. Users may inadvertently install them alongside desired software because the installation process typically does not clearly disclose the presence of additional programs.
• Misleading Advertisements: Users may encounter misleading advertisements that offer seemingly legitimate software downloads or updates. Clicking on these ads can lead to the inadvertent installation of browser hijackers or PUPs.
• Fake Software Updates: Cybercriminals create fake update notifications for popular software, such as web browsers or media players. Users who fall for these scams may unknowingly install browser hijackers or PUPs instead of legitimate updates.
• Disguised as Useful Extensions: Browser hijackers can be disguised as helpful browser extensions or toolbars. Users may install these extensions believing they will enhance their browsing experience, only to discover later that they alter browser settings and behavior.
• Complex Installation Processes: Some installation processes for software, especially free software, are intentionally complex or misleading. Users who rush through these installations without carefully reviewing each step may inadvertently agree to install additional software, including browser hijackers or PUPs.
• Pre-Checked Boxes: During software installation, users may encounter pre-checked boxes that indicate consent for the installation of additional software. If users do not notice or uncheck these boxes, they may unknowingly install browser hijackers or PUPs.
• Fake Download Buttons: On some websites, especially those hosting pirated content or illegal downloads, fake download buttons are used to trick users into downloading unwanted software, including browser hijackers and PUPs.
• Social Engineering Tactics: Some browser hijackers and PUPs use social engineering tactics, such as fake error messages or warnings, to convince users to download and install them voluntarily.

By exploiting these questionable distribution tactics, browser hijackers and PUPs are able to infiltrate users' devices without their knowledge or consent, often leading to undesirable changes in browser settings, compromised privacy, and degraded system performance.