Cyber Threat Actor: Threat Group-4034

The threat actor is publiclyreferenced under the alias Threat Group-4034.
Open‑source reporting associates this alias with activity originating from Ireland.
No further public details about the actor’s size, structure, or sponsorship have been disclosed.
The alias is linked to a specific intrusion reported in mid‑2023.
No alternative names or aliases have been attributed to this group in the available sources.

On June 1, 2023, the actor gained unauthorized access to the internal office IT system of Peter Mark.
The intrusion resulted in the compromise of certain human‑resources data stored on that system.
The extent of the data exposure was described as partial and remained under investigation at the time of public disclosure.
The attack did not interfere with Peter Mark’s salon operations or its third‑party customer payment system.
Peter Mark reported the incident to the relevant national authorities following detection.

Peter Mark issued a public statement on June 22, 2023, confirming that no evidence of data leakage to the dark web had been found.
The statement emphasized that the breach was confined to office‑based HR information and did not affect customer‑facing systems.
Ongoing investigative work was noted to determine the full scope of the accessed data.
No public attribution to a state sponsor, criminal consortium, or other threat‑actor alliance has been made for Threat Group‑4034.
The available information does not indicate any additional campaigns or operations linked to this alias beyond the Peter Mark incident.