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Documentation for version v75

Data Transmitted During Synchronization

To synchronize segments based on audiences from external sources (Google Audience, Yandex Audiences™, VK Ads™), hashed profile data is transmitted to the corresponding systems.

This article provides a list of data transmitted during audience synchronization. This information may be required by platform users upon request from their information security department.

Yandex.Audiences™​

Authorization
Application IDClient ID from Yandex.OAuth
Application SecretClient Secret from Yandex.OAuth
Transmitted Data
emailEmail address. Transmitted in hashed form (MD5)
phonePhone number. Transmitted in hashed form (MD5)
externalIDValueSegment ID in Yandex.Audiences™. Transmitted in hashed form (MD5)
PushData.SubscriptionIDPush subscription ID. Transmitted in hashed form (MD5)
Data Hashing

Data hashing can be disabled by setting the configuration parameter YAAUDIENCES_SYNC_DO_HASHING to false.

Google Audience​

Authorization
Application IDClient ID
Secret KeyClient secret
TokenDeveloper token
Transmitted Data
emailEmail. Transmitted in hashed form (SHA256)
phonePhone. Transmitted in hashed form (SHA256)
Advertising IdentifiersIDFA / Google Advertising ID and other advertising IDs
Segment DataSegment ID and segment name

VK Ads™​

Authorization
Client Identifierclient_id
Secret Keyclient_secret
Transmitted Data
vkVK user identifier
emailEmail address. Transmitted in hashed form (MD5)
phonePhone number. Transmitted in hashed form (MD5)
okOdnoklassniki user identifier
advertising_idGoogle Advertising ID
idfaApple mobile device identifier

Facebook Ads Manager*™​

Authorization
Application IDApp ID
Application Secret KeyApp Secret
Transmitted Data
emEmail. Transmitted in hashed form (SHA256) after normalization
phPhone. Transmitted in hashed form (SHA256) after normalization
ctCity. Transmitted in hashed form (SHA256) after normalization
countryCountry. Transmitted in hashed form (SHA256) (ISO 3166-1 alpha-2)
fnFirst name. Transmitted in hashed form (SHA256) after normalization
lnLast name. Transmitted in hashed form (SHA256) after normalization
geGender. Transmitted in hashed form (SHA256), m/f
dbDate of birth. Transmitted in hashed form (SHA256) in YYYYMMDD format
external_idTransmitted without hashing (recommended to send in original format)

*Meta, the organization that owns Instagram, Facebook and WhatsApp, is recognized as extremist and banned in the Russian Federation.

Last updated on Mar 3, 2026
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  • Yandex.Audiences™
  • Google Audience
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