For 2 years I worked as deputy head of security at a warehouse complex, there is nothing to learn as a fraudster - they know all these schemes and even more. There isn’t a normal warehouse to have such “smart” ones. In such large cases, not only the security and warehouse may be in the subject ... there are also departments involved in the preparation of invoices, contracts with freight carriers, etc. etc. In one Moscow company, one of the largest in its field, the SB for 2 years racked their brains where the goods go ... all the documents are in order, the press on the TV is normal, everything is fine in the video, it is unrealistic to steal from the warehouse in such quantities, more there everything under the OS, video and several security posts independent of each other ...
After 2 years, the losses stopped, just because the "scammers" quit ...
I learned this story with details from one of the company's logisticians. As it turned out later - he was also in the subject ...