Social EngineeringOtherPhishingStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountPHIMediumContained

STERICYCLE, INC.

bd_c553d7b276f27679 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 27, 2020

Filed

Aug 26, 2020

To disclose

4 weeks

Affected

50state residents only

Linked

6 filings

Confidence

65%

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

Stericycle, Inc. notified Montana residents of a data security incident involving unauthorized access to employee email accounts via phishing. Access occurred between October 2019 and April 2020. Personal information including SSNs, driver's licenses, and financial data may have been present in accessed emails. No evidence of actual access to specific PII was found. Stericycle secured accounts, updated security controls, and provided 24 months of credit monitoring.

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Incident timeline

undetected · 300 days

discovery → filing · 4 weeks / 30 days

Oct 1, 2019

Begins

Jul 27, 2020

Discovered

Aug 26, 2020

Filed

vs. sector median

4 wks faster

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

Washington State AGbd_272a67efcc47c0cb2020-08-26Candidate
Indiana State AGbd_36e73081c3bf149d2020-08-26Verified
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: Otherllm

Discovered: Jul 27, 2020
Breach occurred: Oct 1, 2019 – Apr 30, 2020
Undetected for: 300 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 26, 2020
Affected individuals: 50state-resident count only
Data types: Identity (basic)Government IDFinancial accountPHI
Data elements: Social Security number
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Launched an investigation into the suspected phishing activity
Secured each impacted employee email account
Continued to monitor for suspicious activity
Reviewed and updated our employee email security controls
Continued to train our workforce regarding cybersecurity issues
Providing access to 24 months of MyIDCare credit monitoring and identity protection services
Changes made: Reviewed and updated our employee email security controls
Continued to train our workforce regarding cybersecurity issues
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(30 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 ↗

Washington State AGAug 26 · first

Indiana State AGAug 26 · first

Montana State AGAug 26 · first · this page

New Hampshire State AG+5d

California State AG+5d

Oregon State AG+5d

Pattern: first filing Aug 26 (WA), 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://dojmt.gov/wp-content/uploads/OCP/a-notif-51.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: 0cdb3597dc26a85675f130f4f5502921f6258a5fcbddf1f7c6f60355521bc11e

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entitySTERICYCLE, INC.

Victim entitySTERICYCLE, INC.

Incidentdiscovered Jul 27, 2020

Stated responseLaunched an investigation into the suspected phishing activity

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov