The security of patient health and financial information is nothing to take lightly as John Muir Health in Walnut Creek, Calif., has learned. The hospital system has begun mailing notices to 5,450 patients warning them of a "potential breach" related to the theft of two laptop computers two months ago, reports the San Francisco Business Journal. John Muir's woes represent the tip of an ongoing security nightmare, according to Healthcare IT News. Many hospitals have critical gaps in data security, and rather than spending money to forestall serious security breaches, they tend to devote resources after a breach has occurred. Article