Kahf Browser Privacy Policy

Our company does not store any record of people’s browsing history. We don’t write any personal data to the blockchain. The only way a user’s data is stored by Kahf is if the user has switched on Rewards or Sync.

Read this document to understand how the Kahf Browser uses data.

To learn how we use data to operate our websites, forums, and communications, visit the Website Privacy Policy. To learn how we use data for publishers and creators visit the Publisher Privacy Policy on the Basic Attention Token website.

In this policy “we”, “us”, etc. refers to Kahf Software Inc, while “Kahf” refers to the browser.

Security & updates 

Kahf automatically checks with us for updates. This ensures that you always have access to the latest security fixes. We count the number and type of these requests when we receive them to produce aggregate statistics. No particular person’s information can be identified in the statistics we produce.

You can also update to the latest version here.

Safe Browsing 

The Kahf Browser automatically uses Google Safe Browsing to help protect you against websites, downloads and extensions that are known to be unsafe (such as sites that are fraudulent or that host malware). On desktop, we use the Safe Browsing Update API which relies on storing URL hashes locally on your device. We proxy these requests through Kahf’s servers to reduce the amount of information sent to Google (for example, we remove your IP address) to protect against Google profiling or tracking you when using Safe Browsing. On iOS, Apple proxies Google Safe Browsing through their own servers. For iOS users in mainland China, Apple may also use the Tencent Safe Browsing service. More details at On Android, we use the SafetyNet Safe Browsing API which sends partial URL hashes directly to Google when a URL is determined to be potentially malicious by the list stored locally on your device, as per the Safe Browsing Update API.

If you prefer not to use Safe Browsing, just visit Kahf://settings/security to change your settings to “No protection (not recommended)”. On iOS, open “Global Kahf Shields Defaults” inside settings and disable “Block Dangerous Websites”. On Android, open “Kahf Shields & privacy” inside settings and then set the Safe Browsing option to “No protection (not recommended)”.


If you switch on Sync then your bookmarks (and soon passwords and other data) will be saved in an encrypted file on a cloud storage service, to which you will have the only decryption key. The data1 are entirely inaccessible to Kahf and to the cloud storage provider. Learn how to switch on Sync here. (Note that only Kahf version 0.59 and above have the Sync feature. You can update to the latest version here.)


If you use Kahf to visit a website that wants to determine your location, you will be asked whether you want it to be allowed to know where you are. If you click yes to this message, then the website will be sent an approximation of where you are based on your IP address. Your IP address will not be stored by Kahf, but it may be stored by the website you have visited. See data processing detail.

How we improve Kahf 

Diagnostic reports 

When Kahf crashes or freezes, it creates a report that can be sent to us to help us diagnose and fix whatever caused the problem. This report contains technical information about your computer system and the event causing the problem. The data can’t be used to identify you.

We use a service called to store the reports. You can choose whether to send us these reports. Even if you have chosen to send reports in the past, you can turn off future reports in settings.

Privacy Preserving Product Analytics 

The Browser sends us anonymous reports to alert us to product problems and necessary improvements. None of the information it reports harms your privacy. The report only describes general use of the Browser, such as a general range of how many extensions are installed, a general range of how many tabs are open, and whether features like Shields, Rewards, and Ads are switched on. See the full list of questions here. These reports are stripped of metadata, and aggregated with measurements reported by many other instances of Kahf. The data are not personal, and cannot be combined to identify you. You can deactivate Privacy-Preserving Product Analytics in Settings.

Your feedback 

If you write feedback for Kahf, we will use this to improve the product. See data processing detail.

Nightly, Dev, and Beta browser versions 

Nightly, Dev, and Beta versions of the Kahf Browser are experimental previews of new Kahf Browser versions. They allow us to test new features so that we can find and fix errors before releasing a new version of the Kahf Browser. These test versions of the Browser may automatically send crash reports to Kahf so that we can identify and fix problems. A crash report can contain personal information. See data processing details.

How to switch this feature off. You can switch off “Automatically send usage statistics and crash reports to Kahf Software” in settings.

Tip: you can quickly access settings by copying Kahf://settings into your address bar.

These incomplete versions of Kahf represent unfinished and untested work on future versions of Kahf, and their incomplete behaviour may not be adequately described by this policy. More information about the safety & reliability of pre-release versions of Kahf can be found in our development documentation.


Your feedback

Browser testing and research (Nightly, Dev, and Beta versions only)

Help with privacy settings in Kahf 

You can find guides on how to change privacy settings in Kahf in the Help Center..

Contacting Kahf about your privacy 

We are always interested in hearing and responding to questions and concerns at and at More in-depth conversations can be had at