Clean Software Alliance (CSA)

Chrome is participating in a pilot test of the Clean Software Alliance (CSA), and provides a feature by which CSA Installer Members can record information about what has been installed on the system. These records consist of the following information:

<vendor_id> - unique identifier of the installation vendor.

<install_id> - unique installation ID (per vendor).

<publisher_id> - unique identifier of the publisher (or main product)
being installed.

<install_time_client> - installation start time as per the user’s
machine.

<install_time_server> - installation start time as per the server
time.

<advertisers_id> - a comma-delimited list of unique advertiser IDs
accepted by the user and installed in addition to the main product.

<hmac_sha256_validation> - hmacSHA256 hash of a string containing all
the entry fields using a private salt provided by every vendor. This field
is used to validate the entry data and to prevent abuse.

If Chrome detects a security incident, some of this data may be reported as part of its environmental data collection. Learn more.