Law enforcement agencies across the country are sounding the alarm about a dangerous form of gift card fraud known as “card draining” this holiday season. Authorities report busting what they describe as a highly sophisticated scheme just this month to steal funds off gift cards before recipients can spend them. The Sacramento County Sheriff’s Office in California arrested a man caught tampering with thousands of gift cards last week. Detectives had observed Ningning Sun acting suspiciously in the payment aisles of a Target store before confronting him trying to exit with over 5,000 gift cards lifted from Target and Apple.