HackingTechnologyInformationStolen CredentialsCustomer Data InvolvedCredentialsIdentity (basic)LowResolved

SLACK TECHNOLOGIES, INC.

bd_240626f50aa2b0a7 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Jul 17, 2019

To disclose

—

Affected

Not disclosed

Confidence

65%

Full breach record for SLACK TECHNOLOGIES, INC. →

Slack Technologies, Inc. notified users that their sign-in credentials (email addresses and passwords) were in the possession of an unauthorized individual. The incident was linked to the 2015 security incident, potentially resulting from malware or credential reuse from third-party breaches. Slack reset passwords for impacted accounts and recommended enabling two-factor authentication.

J jump to incidentP pin to compareR raw source

Incident timeline

Mar 20, 2015

Begins

Jul 17, 2019

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: SLACK TECHNOLOGIES, INC.
norm: slack technologies
Domain: slack.com

Name: SLACK TECHNOLOGIES, INC.
norm: slack technologies
Domain: slack.com
Industry: Technologyllm

Discovered: —
Breach occurred: Mar 20, 2015
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: CredentialsIdentity (basic)
Attack vector: Unknown
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Reset the passwords for the impacted members of your workspace
Sent an email similar to this one to each of your affected active team members
Recommended turning on 2FA for your Slack account
Changes made: Recommended turning on 2FA for your Slack account
Recommended ensuring that your computer software and anti-virus software is up to date
Recommended creating new, unique passwords for every service you use
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-148983
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 17, 2019
Raw hash: 95b88165443169c66648d65afe9df2f4d6a9c07f78ad9f6a73bb75d11fb0b892

Reporting entitySLACK TECHNOLOGIES, INC.

Victim entitySLACK TECHNOLOGIES, INC.

IncidentUnknown

Stated responseReset the passwords for the impacted members of your workspace

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov