HackerOne Cookies Policy

Effective as of December 31st, 2019, HackerOne Inc. and its affiliates (collectively, "HackerOne", "we", "us", or "our") have updated our Cookies Policy.

Our Cookies Policy outlines the general policy, practices, and types of cookies that HackerOne may use to improve our services and your experience when visiting our Services. Please refer to our Privacy Policy for additional information and definitions regarding our privacy practices.

Cookies are small pieces of text used to store information on web browsers. They are used by many websites to store and receive identifiers and other information on devices, such as a mobile phone or computer. Our Services use cookies and other similar technologies (collectively "cookies") in order to provide a better service to you and to generally improve our Services. For example, we may use cookies to help direct you to the appropriate part of our Services by indicating that you are a repeat visitor. We also may use information to present you with resources that are matched to your preferences and to manage and track the effectiveness of our marketing efforts.

We also may include tracking pixels, which are small graphic images, in our marketing communications to determine engagement. These cookies may be set by us or by third parties with whom we have partnered to assist in our marketing efforts.

Some portions of our Services are functional without cookies, and you may generally choose whether to accept cookies. Most web browsers are set to accept cookies by default; however, you may be able to delete cookies yourself through your browser's cookie manager. To do so, please follow the instructions provided by your web browser. Please note that disabling cookies will reset your session, disable auto-login, and may adversely affect the availability and functionality of our Services and other resources we can provide to you.

To find out more about cookies, including how to see what cookies have been set and how to manage and delete them, visit https://www.allaboutcookies.org.

If you wish to opt-out of cookies that collect information to serve you interest-based ads, you may opt-out by clicking here (or if located in the EEA, UK, or Switzerland, click here).

Functional Cookies

Functional cookies are necessary to help our Services to work as intended. Some of these cookies include, but are not limited to:

  • app_signed_in – Determines if you have logged in before and, if so, provide you with a link to your HackerOne Inbox.
  • privacycookie – Determines if you have dismissed a notification banner regarding this policy.
  • _cfduid, _cf_bm – Used to identify malicious visitors, reduce the chance of blocking legitimate users, and provide customized services. Learn more at https://support.cloudflare.com/hc/en-us/articles/200170156.

You may disable any of these functional cookies as described above; but if you do, various functions of the Services may be unavailable to you or may not work as intended.


We use third-party cookies and similar tracking technologies to help us understand how you use our Services and improve your experience. For example, we may use cookies to understand what pages you browsed before submitting a contact request. You can delete these cookies through your browser settings or through the links listed below.

The analytics cookies we use include:

In addition, we also may include tracking pixels, which are small graphic images, in our email messages to determine whether the messages were opened and if the links were clicked. If you do not want to receive tracking pixels in emails we send you, you will need to disable HTML images in your email client, but that may affect your ability to view images in other emails you receive.

Advertising & Targeting

These third-party cookies are placed by third-party advertising platforms or networks to collect information about your visits to and actions on certain pages of our Services so that they can deliver ads for relevant HackerOne products and services to you later, such as when you are on certain third-party sites. These cookies also track ad performance.