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# System prepended metadata

title: Metamask checkup

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# Metamask checkup

Follow the steps below to find out if the Metamask extension that you have installed on your Chrome or Brave is genuine (or a backdoored one).

1. Open chrome/brave, right click on the Metamask extension icon on the upper left and then select "Manage extensions"

2. On the page that opens there should be a slider on the upper right corner that says "Developer mode". Is it turned on or not?
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![](https://i.imgur.com/PjVYZsn.png)

3. Next, scroll down on that page, and there should be a line that says "Source". What does it say under "Source"?
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![](https://i.imgur.com/rfDpY4D.png)  
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Does it say "Chrome Web Store" ("Web Extensions Source" for Brave) or is it something else?

4. Compare the URL of the page that you're looking at to this one: `chrome://extensions/?id=nkbihfbeogaeaoehlefnkodbefgpgknn`. Is the extension id the same? Send your extension id over chat for a double check.
