Social EngineeringHealthcareTechnologyHealthcarePhishingStolen CredentialsCustomer Data InvolvedTargetedIdentity (basic)Government IDHealth (basic)PIIMediumContained

GUARDANT HEALTH, INC.

bd_4fbeca7bd9e1cb01 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 18, 2018

Filed

Sep 16, 2018

To disclose

9 weeks

Affected

2state residents only

Linked

2 filings

Confidence

64%

Full breach record for GUARDANT HEALTH, INC. →4 incidents on file

Guardant Health, Inc. notified Montana residents that an employee email account was compromised between July 13-18, 2018. The incident involved unauthorized access to emails containing personal and health information (names, SSNs, DOB, diagnosis codes). Guardant engaged forensic investigators, improved firewalls, and provided 24 months of identity protection services.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 5 days

discovery → filing · 9 weeks / 60 days

Jul 13, 2018

Begins

Jul 18, 2018

Discovered

Sep 16, 2018

Filed

vs. sector median

4 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

HHS OCRbd_c79c29453cfda1982018-09-14 · +2dVerified

Name: GUARDANT HEALTH, INC.
norm: guardant health
Domain: guardanthealth.com

Name: GUARDANT HEALTH, INC.
norm: guardant health
Domain: guardanthealth.com
Industry: HealthcarellmTechnologyllm

Discovered: Jul 18, 2018
Breach occurred: Jul 13, 2018 – Jul 18, 2018
Undetected for: 5 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 16, 2018
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government IDHealth (basic)PII
Data elements: Social Security numberDate of birthMedical information
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: phishing_link

During the incident: Engaged a leading cyber forensics firm to help us determine whether any emails were accessed
Began an investigation
Took steps to stop the unauthorized access into our systems
Changes made: Improved our firewall to block potential future intruder attempts
Updated employee passwords to be more complex
Educated our employees to be alert for suspicious email activity
Working with a leading cyber forensic firm to support our investigation and provide us with recommendations on additional measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(60 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

HHS OCRSep 14 · first

Montana State AG+2d · this page

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://dojmt.gov/wp-content/uploads/Guardant-Health.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 16, 2018
Raw hash: 872087f9268ac767ed9a67da5fcd1ed9d76ce71041df0caf5c08c67757eea6d3

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityGUARDANT HEALTH, INC.

Victim entityGUARDANT HEALTH, INC.

Incidentdiscovered Jul 18, 2018

Stated responseEngaged a leading cyber forensics firm to help us determine whether any emails were accessed

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov