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Are Your Post-Breach Forensic Reports Privileged?

By Brian E. Ray
July 01, 2017

The Central District of California recently joined the small growing list of courts that have held forensic reports created by outside security companies following a data breach are protected from disclosure in civil litigation in certain circumstances. In the case In re Experian Data Breach Litigation, 15-01592 (C.D. Cal. May 18, 2017), Judge Andrew J. Guilford held that a forensic report created by the security firm Mandiant at the direction of Experian's outside counsel, Jones Day, qualified as trial preparation material (or “work product”) under Federal Rule of Civil Procedure (FRCP) 26(b)(3) and denied a motion to compel its production. Experian is only the third case to result in a ruling addressing these important questions. While all three rulings protected forensic reports from disclosure, the analysis in each case was highly fact-dependent. Judge Guilford's reasoning in Experian addresses several key issues not directly raised in those other cases and sheds light on several others.

The Experian Case

In September 2015, Experian discovered that an unauthorized third party had accessed one of its systems. Experian promptly retained an outside legal firm, Jones Day, to investigate and advise on the legal implications of the breach. Jones Day hired the security firm Mandiant to conduct a technical analysis of the incident.

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