Mark Thomas
ent_10480e8ef6ba9c0876d85aeb
Disclosures
6
State AG · Leak Site · 6 jurisdictions
Multi-filing incidents
1
incidents joining 2+ filings here
Max affected reported
1,357
nationwide · State AG ME
Leak-site claims
1
unverified actor claims
Identity resolution
- Canonical name
- Mark Thomas
- Normalized
- mark thomas— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- No match
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- None on record
Disclosure history (6)newest first
- Maryland State AGas victim2025-03-17
Mark Thomas notified Maryland AG of a breach involving personal and health information of affected residents. The incident involved unauthorized access via compromised credentials. Mark Thomas is offering 12 months of credit monitoring and advising on fraud alerts.
- Montana State AGas victim2025-03-17
Mark Thomas experienced unauthorized network access between Oct 11-19, 2024. Personal information including SSNs and driver's licenses was potentially copied. Notification sent March 17, 2025, offering 12 months credit monitoring.
- Massachusetts State AGas victim2025-03-17
Mark Thomas reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-03-17. 1 Massachusetts residents were affected.
- California State AGas victim2025-03-17
Mark Thomas notified the California Attorney General of a data security incident where an unauthorized actor accessed systems from October 11-19, 2024. The organization became aware of the potential unauthorized access on October 19, 2024. A forensic investigation and manual document review concluded on February 19, 2025, that personal information was included in the impacted data. The incident involved potential viewing and/or obtaining of files containing personal information. The organization engaged external cybersecurity professionals, secured systems, and is offering 12 months of complimentary credit monitoring to affected individuals.
- Maine State AGas victim2025-03-17
Mark Thomas reported an external system breach (hacking) occurring between Oct 11-19, 2024. Unauthorized access resulted in potential exposure of personal information for 1,357 individuals, including 1 Maine resident. The company engaged forensic investigators and offered 12 months of credit monitoring.
- GLOBALLeak Siteas victim2024-10-15
Founded in 1927, Mark Thomas & Company have provided land surveying, engineering, urban design, and landscape architectural services that have set the stage for countless California roadways, structures, bicycle/pedestrian facilities, parks, communities, and flood control and utility systems. Mark Thomas is headquartered in San Jose, California.