Case Overview: The First Circuit Court of Appeals has affirmed a lower court's dismissal of a data breach class action against Bayamón Medical Center, ruling that the plaintiff failed to establish a traceable link between her alleged injuries and a 2019 ransomware attack on the Puerto Rico-based hospital.

Consumers Affected: Patients of Bayamón Medical Center whose personal information may have been exposed in a 2019 ransomware attack

Court: U.S. Court of Appeals for the First Circuit

Latest Development: First Circuit affirms dismissal for lack of Article III standing — specifically, failure to allege traceable injury

First Circuit Upholds Dismissal of Bayamón Medical Center Data Breach Lawsuit, Citing Traceability Gap

A federal appeals court has sided with a Puerto Rico hospital in a data breach class action, ruling that the plaintiff could not sufficiently connect her claimed harms to the healthcare provider's 2019 ransomware attack. The decision reinforces a demanding standard for data breach plaintiffs seeking to establish standing in federal court.

The First Circuit's ruling in Santos-Pagán v. Bayamón Medical Center was reported by legal analyst Melanie Conroy of Pierce Atwood LLP via Databreaches.net, which noted that the court's analysis centered not on whether an injury occurred, but on whether that injury could be traced back to the defendant's specific breach.

What Happened

The First Circuit affirmed the district court's dismissal of the putative class action, concluding that the plaintiff failed to plausibly allege that her injuries were traceable to Bayamón Medical Center's (BMC) 2019 ransomware incident. Under Article III of the U.S. Constitution, plaintiffs must demonstrate three elements to bring a federal lawsuit: injury-in-fact, causation, and redressability. In this case, the appeals court found the causation element — specifically, traceability — to be fatally lacking.

According to the reporting, the court determined that the plaintiff's allegations did not plausibly establish that any harm she experienced stemmed from BMC's ransomware attack, as opposed to some other source of data exposure.

Background

Bayamón Medical Center, a healthcare provider based in Puerto Rico, experienced a ransomware attack in 2019. As is common in healthcare data breach litigation, a patient subsequently filed a class action lawsuit alleging that the incident exposed sensitive personal information and caused resulting harm. Healthcare providers are frequent targets of ransomware attacks, and the personal data they hold — which can include names, Social Security numbers, and medical records — is considered particularly sensitive under federal law.

The plaintiff, identified as Santos-Pagán, sought to represent a class of individuals similarly affected by the incident.

What It Means

The First Circuit's ruling underscores a significant and recurring challenge for data breach plaintiffs: even when a breach is not seriously disputed, plaintiffs must plausibly demonstrate that their specific injuries flowed from that specific breach — not from any other data exposure they may have experienced.

This traceability hurdle has become increasingly consequential in the wake of the U.S. Supreme Court's 2021 decision in TransUnion LLC v. Ramirez, which tightened standing requirements for plaintiffs in federal court. Defendants in data breach cases have since relied heavily on standing arguments — including lack of injury-in-fact and, as in this case, lack of traceability — to seek early dismissal before litigation reaches the merits.

For plaintiffs who may have had personal information exposed in multiple data incidents over the years — a common situation given the frequency of breaches — establishing a direct link to one specific event can be a substantial legal obstacle.

What's Next

With the First Circuit affirming dismissal, the case against Bayamón Medical Center appears to have reached its conclusion at the federal appellate level, barring further proceedings. The ruling may serve as persuasive authority in future data breach cases filed within the First Circuit, which covers federal courts in Maine, Massachusetts, New Hampshire, Rhode Island, and Puerto Rico.

Plaintiffs' attorneys in similar cases may need to pursue more granular factual allegations tying individual harms — such as fraudulent account activity or identity theft — directly to a specific breach event and defendant, rather than relying on generalized claims of exposure and risk.

Lawsuit: Santos-Pagán v. Bayamón Medical Center

Case Number: Not specified in available reporting

Court: U.S. Court of Appeals for the First Circuit

MDL Number: N/A

Status: Dismissal affirmed on appeal

Were you a patient of Bayamón Medical Center and believe your information may have been affected by the 2019 ransomware attack? Legal options in data breach cases vary by jurisdiction and circumstance — check eligibility below to learn more.