HackingTechnologyRetail & ConsumerInformationStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Financial accountFinancial credentialsLowContained

Event Rental Systems

bd_5578d5188eaa0470 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Dec 15, 2025

To disclose

—

Affected

6state residents only

Linked

3 filings

Confidence

66%

Full breach record for Event Rental Systems →

Event Rental Systems (operated by Fullsteam Software Holdings LLC) disclosed a security event where unauthorized code was inserted into customer website modules between October 2024 and October 2025. The code scraped payment card data (number, CVV, expiration) and customer contact info. 6 New Hampshire residents were affected. The company engaged forensic investigators, notified law enforcement and card brands, removed the code, and offered 12 months of credit monitoring via Experian. Notifications began December 15, 2025.

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Incident timeline

Oct 1, 2024

Begins

Dec 15, 2025

Filed

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Nebraska State AGbd_9d723e3147e643e82025-12-15Verified
Oregon State AGbd_694e75732fd59f242025-12-22 · +7dCandidate

Name: Orrick, Herrington & Sutcliffe LLP
norm: orrick herrington sutcliffe
Domain: orrick.com

Name: Event Rental Systems
norm: event rental
Industry: TechnologyllmRetail & Consumerllm

Discovered: —
Breach occurred: Oct 1, 2024 – Oct 1, 2025
Materiality determined: —
Notification sent: Dec 15, 2025
Affected individuals: 6state-resident count only
Data types: Identity (basic)Financial accountFinancial credentials
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1056 Input Capture
Threat actor: ExternalFinancial
Initial access: exploit_public_facing

During the incident: Engaged a forensic firm to investigate how the unauthorized code functioned and what data was affected
Notified law enforcement
Notified the card brands
Removed the unauthorized code
Took steps to secure the affected systems
Began notifying New Hampshire residents via e-mail
Offered one year of complimentary credit monitoring and identity theft restoration services through Experian
Changes made: Deployed additional safeguards onto its systems
Reinforced security practices
Actively reviewing its systems to enhance security monitoring and controls
Regularly reviews security and privacy policies and procedures and implements changes when needed
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.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Nebraska State AGDec 15 · first

New Hampshire State AGDec 15 · first · this page

Oregon State AG+7d

Pattern: first filing Dec 15 (NE), last Dec 22 (OR) — a 7-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://mm.nh.gov/files/uploads/doj/remote-docs/event-rental-systems-fullsteam-software-20251215.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 15, 2025
Raw hash: e9b102c7f4cf678aab9c2085c2b0bc070ebb242362e3478bd0f9651c14073a59

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityOrrick, Herrington & Sutcliffe LLP

Victim entityEvent Rental Systems

IncidentUnauthorized Access

Stated responseEngaged a forensic firm to investigate how the unauthorized code functioned and what data was affected

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov