Social EngineeringProfessional ServicesProfessional ServicesPhishingStolen CredentialsTargetedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountPHIHealth (basic)HighContained

STERICYCLE, INC.

bd_272a67efcc47c0cb · schema v1 · pii pii-v1

Severity

High

Discovered

Apr 8, 2020

Filed

Aug 26, 2020

To disclose

20 weeks

Affected

1,284state residents only

Linked

6 filings

Confidence

71%

Full breach record for STERICYCLE, INC. →2 incidents on file

Stericycle, Inc. notified the Washington Attorney General of a security incident affecting 1,284 Washington residents. Unauthorized access to employee email accounts occurred between October 2019 and April 2020 via phishing. Personal information including SSNs, driver's licenses, and health insurance data was potentially exposed. No evidence of actual data access was found. Stericycle engaged forensic investigators, secured accounts, and provided 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 190 days

discovery → filing · 20 weeks / 140 days

Oct 1, 2019

Begins

Apr 8, 2020

Discovered

Aug 26, 2020

Filed

vs. sector median

+2 wks slower

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Indiana State AGbd_36e73081c3bf149d2020-08-26Verified
Montana State AGbd_c553d7b276f276792020-08-26Verified by operator
New Hampshire State AGbd_0fac471d72510ed22020-08-31 · +5dVerified
California State AGbd_9838e91af18ddca82020-08-31 · +5dVerified

Show 1 more filing ↓up to 5d gap

Oregon State AGbd_f8d84c251d9b4cd32020-08-31 · +5dVerified

Name: STERICYCLE, INC.
norm: stericycle

Name: STERICYCLE, INC.
norm: stericycle
Industry: Professional Servicesllm

Discovered: Apr 8, 2020
Breach occurred: Oct 1, 2019 – Apr 8, 2020
Undetected for: 190 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 26, 2020
Affected individuals: 1,284state-resident count only
Data types: Identity (basic)Government IDFinancial accountPHI
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberPassport numberHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 300-399dexposure 100-199d
WA-stated discovery: Found after the fact
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Notified Washington Office of the Attorney General
Initial access: phishing_link

During the incident: Launched an investigation into the incident with the assistance of a leading cybersecurity firm
Secured each impacted employee email account
Continued to monitor for suspicious activity
Reviewed and updated its employee email security controls where appropriate
Continued to train its workforce regarding cybersecurity issues
Providing access to 24 months of MyIDCareTM credit monitoring and identity protection services at no cost
Changes made: Reviewed and updated its employee email security controls where appropriate
Continued to train its workforce regarding cybersecurity issues
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(140 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Indiana State AGAug 26 · first

Montana State AGAug 26 · first

Washington State AGAug 26 · first · this page

New Hampshire State AG+5d

California State AG+5d

Oregon State AG+5d

Pattern: first filing Aug 26 (IN), last Aug 31 (OR) — a 5-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachM10265.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 26, 2020
Raw hash: bf745d7fedf97bb5891cbac90837b490aae4edd1892d4b2f73b08dfb8019808f

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entitySTERICYCLE, INC.

Victim entitySTERICYCLE, INC.

Incidentdiscovered Apr 8, 2020

Stated responseLaunched an investigation into the incident with the assistance of a leading cybersecurity firm

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com