50,000 people installed this Bitcoin browser extension. Now control of it is up for sale
The current offer is separate from documented malware cases, but it shows how buyers can acquire an audience and future update control. Read the full story on CryptoSlateUnderstand the crypto stories that matter and what to watch next. Get The Catalyst in your inbox
Google's store lists 50,000 users for a Bitcoin price extension advertised at $55,650, with the offer including the published product, its source code, and help handing it over, giving a buyer an established crypto-facing audience rather than a ticker built from scratch.
The Bitcoin Price Tracker listing, listed on Sept. 29, puts a price on a product people have already chosen to install. Acquiring the product can also put a new owner in charge of future updates, extending the sale's consequences to people who already installed it.
The sale advertisement does not document a completed transaction or connect the product or its seller to malware.
In a separate investigation published in August, security firm Socket documented attackers acquiring five functional extensions from their authors and introducing malicious updates. Socket's Superior campaign tracker still labels that operation ongoing, with its latest recorded activity dated Nov. 6.
Bitcoin Price Tracker's Chrome Web Store page displays 50,000 users and identifies Extpose as its provider. It displays BTC/USD pricing from Binance in the browser toolbar.
The seller separately reports 37,100 installs from Sept. 14, 2025, through Sept. 13, 2026.
The advertisement describes the product as pre-revenue and offers a buyer opportunities to develop financial-information services or relevant partner offers. The $55,650 is an asking price for the extension, code, and 14 days of handover assistance.
Two other advertisements show how the same proposition extends beyond crypto tools:
| Advertised product | Asking price | Included assets | Audience evidence |
|---|---|---|---|
| Bitcoin Price Tracker | $55,650 | Published Chrome product, code and handover assistance | Google store displays 50,000 users; seller separately reports 37,100 installs over Sept. 14, 2025–Sept. 13, 2026 |
| Page Auto Refresh | $24,999 | Chrome and Edge products, both source codes, website and domain | Seller reports 61,363 Chrome Weekly users on Sept. 2, 2026, and 49,299 Edge Weekly users on Aug. 30, 2026 |
| Translate | $9,999 | Chrome and Edge products and source code | Seller reports 17,153 Chrome Weekly users on Sept. 8, 2026, and 26,084 Edge Weekly users on Sept. 6, 2026 |
The Page Auto Refresh and Translate figures come from dated publisher analytics described by the seller. The offers also include different assets, so their asking prices don't establish a standard price per audience member.
Related ReadingMicrosoft's documentation describes a current-owner support request followed by review and explicit confirmation from both publishers, and the process typically takes approximately three weeks, depending on responses.
After an Edge transfer, the new owner gains full control over the extension's listing and updates. But the public presentation does not necessarily change at the same moment.
Microsoft says changes to the description, screenshots, privacy-policy URL, owner name, and website link do not automatically appear when ownership transfers. The previous information remains visible until the new owner publishes an extension update.
On Edge, that creates a distinction between what they see and who controls the product. A familiar name on a listing may describe the previous owner, even though the transfer has already given someone else update rights. Microsoft describes this display lag as part of the Edge transfer process.