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Yes—but Google said the impact was limited to a very small number of Workspace accounts specifically configured to use Salesloft Drift Email. The access occurred on August 9, 2025, through compromised Drift OAuth tokens. Google said other accounts in the same Workspace domains were not reachable through this incident and that neither Google Workspace nor Alphabet itself was compromised.
What happened to Google Workspace accounts?
Google Threat Intelligence Group said that on August 9, 2025, an attacker used tokens associated with the Salesloft Drift third-party application to access email from a very small number of Google Workspace accounts. The potentially affected accounts were those configured to integrate with Drift Email. Google said accounts in the same domains without that integration were not reachable through this event.
This was access through a trusted third-party integration, not a breach of Google’s Workspace service or Alphabet’s systems. Google’s August 28, 2025 update said: “To be clear, there has been no compromise of Google Workspace or Alphabet itself.”
How the Drift campaign unfolded
Google tracked the attacker as UNC6395. Google said the broader campaign began as early as August 8, 2025, and continued through at least August 18, using compromised OAuth tokens associated with the Salesloft Drift application to access Salesforce instances.
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Salesloft’s Mandiant-backed investigation found earlier access to a Salesloft GitHub account from March through June 2025, followed by access to Drift’s AWS environment and acquisition of customer-integration OAuth tokens. Those tokens enabled the attacker to act through integrations that customers had authorized.
Salesforce said the issue arose from compromised Drift connection credentials, not a vulnerability in Salesforce’s core platform. In its customer advisory, Salesforce stated: “This issue did not stem from a vulnerability within the core Salesforce platform, but rather from a compromise of the Drift app’s connection credentials.”
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What information did UNC6395 target?
Google reported that the actor systematically exported large volumes of Salesforce data, including records from Accounts, Users, Opportunities and Cases. The actor then searched those exports for credentials and other secrets, including AWS access keys beginning with AKIA, passwords, Snowflake-related access tokens, VPN and SSO URLs, and similar sensitive strings. Google also observed the deletion of query jobs while logs remained available for investigation.
Finding sensitive data in an export is not the same as proving that every matching credential was used. Organizations should treat exposed secrets as at risk until they have checked and rotated them, and should investigate logs for possible follow-on access.
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FINRA reported in 2025 that the wider breach affected more than 700 organizations. It said exposed information commonly included names, titles, email addresses, phone numbers, and Salesforce data such as Accounts, Contacts, Opportunities and Cases. FINRA also described access through Salesforce, Google Workspace and, in some cases, Slack integrations. That organization count is not a count of Google Workspace accounts.
How exposure differed by integration
| Configuration or data | What the public statements establish | What it means for an organization |
|---|---|---|
| Drift Email integration configured for a Workspace account | Google said email access occurred on August 9, 2025, in a very small number of such accounts. | Review the account’s integration and audit history, and assess email and credentials available to that connection. |
| No Drift Email integration on a Workspace account | Google said other accounts in the same Workspace domains were not reachable through this event. | The stated Workspace email exposure was tied to the configured integration, not every account in a customer domain. |
| Salesforce connected to Drift | Google described Salesforce exports; Salesforce attributed the incident to Drift connection credentials rather than a core Salesforce vulnerability. | Review the connected app, exported records and activity logs; assess secrets stored in Salesforce data. |
| Other connected services, including Slack | FINRA said some cases involved Slack integrations, but the public statements summarized here do not specify a complete list of affected integrations or per-service counts. | Inventory every Drift connection and investigate each service according to its own logs and authorization scope. |
Google has not published a precise count of affected Workspace accounts; its public description is “a very small number.” The public statements cited here also do not provide a single financial-loss total.
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What affected organizations should do
- Inventory Drift connections. Identify every third-party integration connected to Drift, including whether Drift Email and Salesforce connections were enabled, which accounts or records they could access, and whether other services were linked.
- Revoke and rotate credentials. Revoke or rotate Drift OAuth tokens, API keys and other credentials in scope. Reset associated user passwords and replace any secrets that may have appeared in integrated data, including cloud, Snowflake, VPN and SSO credentials.
- Review audit logs for the incident window. Examine Google Workspace, Salesforce and other connected-system logs for unusual access from August 8 through August 18, 2025. In Salesforce, review Event Monitoring, Connected App authentication and UniqueQuery events, as recommended in the incident guidance.
- Search exported records and support data for secrets. Look for strings such as
AKIA, “Snowflake,” “password,” “secret,” and VPN or SSO URLs. Use an appropriate secret-scanning tool where available, and investigate matches rather than assuming every match was accessed or exploited. - Reduce integration access. Apply least privilege, restrict connected-app scopes and IP ranges where supported, and remove unnecessary API access. Recheck whether each integration still needs the permissions it holds.
- Use Salesforce’s connected-app guidance. Review OAuth Usage, revoke or rotate tokens as appropriate, and monitor the Salesforce Trust page for relevant service and security updates.
Keep a record of which integrations and credentials have been checked, which tokens have been revoked or rotated, and which log reviews remain open. This helps distinguish completed containment from work still pending.
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