Event Rental Systems data breach (2025)

Breach window

Oct 1, 2024 → Oct 1, 2025

When the intrusion reportedly occurred, per the linked filings

Breach discoveredAG web form

Oct 1, 2024

Reported by OREGON AG filing

440 days

⛰️New Hampshire State AGFirst filinglinked via multistate filing link · 100%

Filed Dec 15, 2025bd_5578d5188eaa0470

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.

Affected (this filing): 6

🦫Oregon State AGMost recent

Filed Dec 22, 2025bd_694e75732fd59f24

Event Rental Systems reported a data breach to the Oregon Attorney General. The breach was reported on 2025-12-22. The breach occurred during 10/1/2024, 10/31/2025. The breach was discovered on 10/1/2024. 311 individuals were affected. Notice was sent on 12/15/2025.

Affected (this filing): 311

OR AG >45d

Event Rental Systems

Litigation Timing

Timeline