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Latest / California / July 2019

Slack Technologies, Inc.

Slack Technologies, Inc. notified California AG on Jul 17, 2019 of a data breach, which occurred on Mar 20, 2015. Data exposed: Medical / health information, Usernames / passwords, Email address, Postal address.

Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization
Slack Technologies, Inc.
Source
California AG · source record
Date reported
Jul 17, 2019
Date(s) of breach
Friday, March 20, 2015
Residents affected
Not published by this source
Data exposed
Medical / health information Usernames / passwords Email address Postal address
Notice letter
Sample notice (PDF)
Days to notice
1580 days from the end of the breach window (Mar 20, 2015, no discovery date in the letter) to the California record (Jul 17, 2019). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
Third party
The letter attributes the incident to a vendor or service provider
First seen by BreachTally
2026-10-30 16:13 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

First seen by BreachTally at 16:13 UTC on Oct 30, 2026. New filings reach paid subscribers within 30 minutes of the agency posting, with the count, the data exposed and the letter. Start a 14-day free trial. We email you two days before the first charge and you cancel in one click.
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Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.