A cybersecurity incident at Brockton Hospital has forced staff to revert to paper records and analog methods as officials Tuesday continued work to restore systems and investigate the breach. Signature Healthcare, the hospital’s parent company, said the issue began Monday after “suspicious activity” was detected on part of its network, prompting officials to shut down the hospitals’ systems and activate emergency protocals. “Our systems are offline,” Brooke Hynes, a spokesperson for the hospital, said in an interview Tuesday. The hospital is working with outside cybersecurity experts and has notified State Police and the FBI, Hynes said. Kirsten Setera, an FBI spokesperson, confirmed the office is “aware of the incident” involving Brockton Hospital but declined to comment further. State Police spokesman Tim McGuirk said Signature reported the activity to the Commonwealth Fusion Center but said he could not release further details. “As we urge the public to report suspicious activity they observe, we also encourage businesses to share information in this way,” McGuirk said in an email. “Doing so allows public and private partners to continually strengthen our approach to cyber security.” Officials have not yet determined the nature of the incident, including whether it involves ransomware or if any patient data was accessed or compromised. “We don’t have any immediate indication that anything has been [accessed], but we don’t know,” she said. “That will be part of the full investigation.” There is no estimated timeline for when systems will be restored, a detail that forensic cybersecurity experts say can signal how complex the situation may be. Kyle Sandy, director of cybersecurity at Logically, said the hospital’s decision to take systems offline is consistent with either a precautionary shutdown or a potential ransomware attack. “They thought maybe there is something here, and maybe it gets worse if we don’t take these