Cryptonite is an anti-phishing and anti-fraud software developed by Metacert, a company that offers internet security solutions for various platforms, devices and applications. The addon is available for major browsers such as Google Chrome, Mozilla Firefox, Opera, and Brave, which is gaining popularity in the crypto community.
Once installed in your browser, the extension informs you if a crypto site you are visiting is verified with a green shield in the upper right corner. A black shield means that the website is unknown and could either be a new phishing scam or a page that has not been verified yet. In this case, you should treat it with caution.
Cryptonite will also display a warning if you are about to open a known phishing website. These often mimic legitimate platforms such as digital asset exchanges. Hackers create them in order to get hold of your sensitive personal information including login details, financial data and private crypto keys.
Users are then given several options. They can either proceed to the website ignoring the warning or return to a previous page. Alternatively, they can submit a report if they believe the domain has been labeled as a malware/phishing site in error.
The Cryptonite extension is a paid service that comes with a 30-day free trial. Metacert offers two subscription plans for private individuals: Personal, which supports up to five browsers for $3.99 a month, and Family with a license key for up to 25 browsers for $9.99.
Both plans offer protection against phishing websites, fake crypto apps, Twitter and Reddit accounts, and warning against fake Linkedin profiles. Businesses ordering 20 or more licenses can get a discount.