- Don’t rely on security alone: Resilience alone means constant firefighting. The isolated recovery environment (IRE) resides where immutable backups become a minimally viable working hospital again, in a rehearsed order, on a proven timeline, while the deliberate forensic process of restoring trust in production continues.
- Ensure backups survive: In this era, protecting backup data requires a clean sheet re-design from the ground up to reliably negate situations where an attacker can obtain Domain Admin level access and do anything IT can do. Ask the question: Are we 100% sure that an attacker with our own Domain Admin credentials and valid MFA codes could not harm our backup infrastructure or destroy data? Assume vendor claims are false until proven under real attack conditions. Contract third parties to independently audit backup infrastructure for true immutability.
- Plan to “find clean” quickly: After an attack, does the company want to restore all its data? Most health systems have 100+ petabytes of data in various forms and locations. Conduct threat hunting simulations on the entire data estate to determine how long it would take to “find clean” (restore points without malware) under real-world conditions.
- Recover in priority order: Identity and Active Directory first. Internal communications next to aid in coordination. Clinical applications after that, sequenced by patient impact. Orchestrated recovery automation makes this a runbook, not a guess.
- Run automated drills routinely: Fully-automated recovery drills inside the IRE beat consultant-led tabletop exercises every time. Repeated execution represents the only proof that the plan works reliably.
There’s no question that the planning and engineering required represent a significant investment of resources and time from a cross-functional team from clinical, operational and technology disciplines.However, given the scale of patient and financial impacts of an attack, teams must implement cyber resilience measures long before an attack occurs. Create a body of reporting documents on how health systems can apply hard-won lessons from previous cyberattacks at other hospitals, including practical steps that demand more leadership focus than capital spending. In healthcare, resilience gets measured by the continuity of care in a crisis. Unprotected, an organization may default on its patient care mission. By investing in cyber resilience, the same health system can reduce these impacts to patients and safeguard its critical finances. Josh Howell, Healthcare CTO, RubrikSC Media Perspectives columns are written by a trusted community of SC Media cybersecurity subject matter experts. Each contribution has a goal of bringing a unique voice to important cybersecurity topics. Content strives to be of the highest quality, objective and non-commercial.
Click Here For The Original Source.
