# Most other articles about Add-Ons by Wladimir Palant

Published articles for Most other articles about Add-Ons by Wladimir Palant.

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## BIScience: Collecting browsing history under false pretenses

DevFeed: [BIScience: Collecting browsing history under false pretenses](<https://devfeed.tech/articles/biscience-collecting-browsing-history-under-false-pretenses-36622.md>)

Original publisher: [Read original article](<https://palant.info/2025/01/13/biscience-collecting-browsing-history-under-false-pretenses/>)

Author: Anonymous Researcher

Published: 2025-01-13T12:57:04Z

Content type: article

Language: en

Sources: [Almost Secure](<https://devfeed.tech/sources/almost-secure.md>)

Topics: [Browser Extension](<https://devfeed.tech/topics/browser-extension.md>), [data](<https://devfeed.tech/topics/data.md>), [SDKs](<https://devfeed.tech/topics/sdks.md>), [Security](<https://devfeed.tech/topics/security.md>)

Tags: [browser](<https://devfeed.tech/tags/browser.md>), [data](<https://devfeed.tech/tags/data.md>), [extension](<https://devfeed.tech/tags/extension.md>), [most-other-articles-about-add-ons-by-wladimir-palant](<https://devfeed.tech/tags/most-other-articles-about-add-ons-by-wladimir-palant.md>), [privacy](<https://devfeed.tech/tags/privacy.md>), [sdk](<https://devfeed.tech/tags/sdk.md>)

### AI overview

An anonymous researcher examines claims that BIScience and its brands collect users' browsing histories through Chrome extensions, partner extensions, and an SDK, then sell the data through products including Clickstream OS and AdClarity. The article argues that BIScience's public disclosures and privacy practices are inconsistent with its data-collection practices.

### Source excerpt

This is a guest post by a researcher who wants to remain anonymous. You can contact the author via email. Recently, John Tuckner of Secure Annex and Wladimir Palant published great research about how BIScience and its various brands collect user data. This inspired us to publish part of our ongoing research to help the extension ecosystem be safer from bad actors. This post details what BIScience does with the collected data and how their public disclosures are inconsistent with actual practices, based on evidence compiled over several years. Screenshot of claims on the BIScience website Contents Who is BIScience? BIScience collects data from millions of users BIScience buys data from partner third-party extensions BIScience receives raw data, not anonymized data Misleading CWS policies compliance BIScience extensions exception claims Partner extensions exception claims, guided by BIScience BIScience SDK Unnecessary features Misleading privacy policy disclosures Misleading user consent Our hope for the future Related reading IOCs Who is BIScience? BIScience is a long-established data broker that owns multiple extensions in the Chrome Web Store (CWS) that collect clickstream data under false pretenses. They also provide a software development kit (SDK) to partner third-party extension developers to collect and sell clickstream data from users, again under false pretenses. This SDK will send data to sclpfybn.com and other endpoints controlled by BIScience. "Clickstream data" is an analytics industry term for "browsing history". It consists of every URL users visit as they browse the web. According to their website, BIScience "provides the deepest digital & behavioral data intelligence to market research companies, brands, publishers & investment firms". They sell clickstream data through their Clickstream OS product and sell derived data under other product names. BIScience owns AdClarity. They provide "advertising intelligence" for companies to monitor competitors. I