The China arm of the world’s largest retailer Walmart Inc has obtained a warning from police within the southern tech hub of Shenzhen for breaches of cybersecurity legal guidelines, because the nation tightens its grip over how information is dealt with by companies.The general public safety authorities in Shenzhen discovered 19 cybersecurity loopholes in November within the on-line community of Walmart’s China operation, which might be inclined to exploitation, and the corporate didn’t subsequently repair the problems in a well timed method,…