I'm CEO of Lifebit where we build federated platforms for genomic and health data, so I approach this from the data custodian side--we're the ones who get targeted, not the negotiators. Our fastest high-confidence check is verifying data against our **Airlock audit logs**. Every TRE we deploy has mandatory Airlock controls that block any data export without approval. When attackers claim they exfiltrated 2TB of patient genomics, I can check Airlock logs in under 60 seconds to see if *anything* actually left the environment. If the logs show zero approved exports during their claimed timeframe, they're lying--the data physically couldn't have left our secure perimeter. We had a pharma client get a ransom demand last year claiming 500K patient records were stolen. Airlock logs showed the only data that moved out in 6 months was three small summary statistics files--around 2MB total--that went through full approval workflow. The attackers had nothing beyond what was already public in a research paper. Client paid zero, resumed work same day. The reason this beats backup timestamp checks is that Airlock sits at the *egress point*--it doesn't matter if files were accessed internally, what matters is whether data crossed the security boundary. Attackers can browse all day inside a compromised system, but if Airlock never opened, nothing got out.
Before engaging in ransom negotiations, it's crucial to analyze network logs and internal security systems to verify the nature and extent of a data breach. This involves reviewing server and access logs as well as alerts from intrusion detection systems to confirm if sensitive data was compromised. This swift verification provides immediate insights into the breach's legitimacy, helping shape negotiation strategies and urgency based on factual evidence.
Before we even think about negotiating with a ransomware gang, I search their leaked sample for our files. Once, we immediately spotted our own internal documents and naming conventions, confirming the breach in minutes. This saves a ton of time because you don't have to rely on whatever the hackers are claiming. Set up a script to scan for your unique IDs or branding. It's simple, fast, and gives you a solid reality check.