NEW YORK (AP) — Worries rippled through the consumer market for antivirus software after the U.S. government banned federal agencies from using Kaspersky Lab software on Wednesday. Best Buy and Office Depot said they will no longer sell software made by the Russian company, although one security researcher said most consumers don't need to be alarmed.

The U.S. Department of Homeland Security cited concerns about possible ties between unnamed Kaspersky officials and the Kremlin and Russian intelligence services. The department also noted that Russian law might compel Kaspersky to assist the gov...