HackingTechnologyInformationStolen CredentialsData ExfiltratedCredentialsLowContained

StumbleUpon

bd_f41abfd28d1ecdc0 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Apr 8, 2014

To disclose

—

Affected

Not disclosed

Confidence

66%

Full breach record for StumbleUpon →

StumbleUpon, Inc. submitted a California SB-24 breach notification regarding an incident in April 2014. The breach involved unauthorized access to user credentials, resulting in a password reset. The organization reset passwords as a response action. No specific number of affected individuals was disclosed in the filing.

J jump to incidentP pin to compareR raw source

Incident timeline — partial

? — ?

Breach window unknown

Apr 8, 2014

Filed

—

No filing yet · watching

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

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

Name: StumbleUpon
norm: stumbleupon
Domain: stumbleupon.com

Name: StumbleUpon
norm: stumbleupon
Domain: stumbleupon.com
Industry: Technologyllm

Discovered: —
Materiality determined: —
Notification sent: Apr 30, 2014
Affected individuals: Not disclosed
Data types: Credentials
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Reset passwords
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/sb24-44746
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 8, 2014
Raw hash: 41919ca2802b87de8316f0b3a523ed2217d23cec34e8b7eb99875ec1ca4076ea

Reporting entityStumbleUpon

Victim entityStumbleUpon

IncidentUnauthorized Access

Stated responseReset passwords

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov