Cyberattack Hits Fluid Handling Provider, HydroServe
INCIDENT
Chelmsford, Massachusetts-based HydroServe LLC, doing business as Gustavo Preston Company, suffered a cyberattack in October where personally identifiable information ended up stolen in the hack.
“On October 14, 2025, Gustavo Preston identified suspicious activity on certain computer systems,” according to a letter to victims of the attack. “Gustavo Preston immediately took steps to secure its systems and launched an investigation into the nature and scope of the activity.”
As a result of its investigation, Gustavo Preston found an unknown actor gained access to certain computer systems between October 6, 2025 and October 14, 2025 and was able to view or download certain data.
Type of Malware
No Malware identified
Threat Source
No threat source identified