Los Angeles — On Tuesday, the San Bernardino County Sheriff's Department in Southern California announced the arrests of a dozen people accused of stealing millions of dollars in goods through a cargo theft ring that used legitimate trucking companies as cover.

But the goods they stole represent just a drop in the bucket of a nationwide problem: cargo thefts account for up to $35 billion in losses in the U.S. every year, according to the National Insurance Crime Bureau, with many heists happening while shipments are in transit through sophisticated online schemes.

"People obviously are driving the freeways and they see commercial trailers up and down the freeway all day long, but no one really knows if that is a stolen load that they're driving next to, and or if it's just going fro

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