A single unauthorized transaction in the 15 months following a data breach affecting 1,000 stores couldn’t support class claims against the SuperValu retail chain, the U.S. District Court for the District of Minnesota held Jan. 7 (In re SuperValu, Inc., Customer Data Sec. Breach Litg., D. Minn., No. 14-MD-2586, 1/7/16).

The plaintiffs failed to show a substantial risk of imminent harm, given that there was just one unauthorized charge over a 15-month period of time, Judge Ann D. Montgomery said.

Defendant SuperValu Inc. suffered a pair of data breaches in spring and summer 2014, resulting in the potential...