Businesses across the United States are increasingly leaning into the vaccination effort, offering a range of freebies and incentives to customers who show proof of getting a COVID-19 shot. Security experts note, however, that the information on vaccine record cards—currently the only proof of vaccination—contains sensitive information that bad actors could exploit; they urge people to be mindful when flashing the cards—and definitely not share photos of them on social media. Three separate vaccines against the CCP virus have been approved in the United States, and a fourth emergency use application is expected soon for AstraZeneca’s version. Over 128 million doses have been administered as of March 23, with the highest administration rates in New Mexico, Alaska, Connecticut, and the Dakotas, according to the Centers for Disease Control and Prevention (CDC). Looking to help the vaccination rollout build more steam, many companies—including Amtrak, Dollar General, Instacart, McDonald’s, and Target—have offered …