Katherine Archuleta announced Friday that she is stepping down as the director of the Office of Personnel Management, following a breach of databases that hold federal workers' personal information. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images

Dmitri Alperovitch, co-founder of the cybersecurity startup CrowdStrike, says his company is building stockpiles of intelligence about potential hacking groups. Keith Bedford/Reuters/Landov hide caption

itoggle caption Keith Bedford/Reuters/Landov