No one can open other people's suitcases at will, not even the security guards. When handling a case, the police have a search warrant and can freely enter and leave other people's homes, but they will never make a move without documents. So by the same token, these security guards have no relevant documents and are not qualified to rummage through suitcases. The reason why security guards do this is mainly that someone will put things in the factory into suitcases and sneak them out of the factory, causing losses to the factory.
The consequences of violating the right to privacy are very serious, so we must compensate the parties for mental damage and apologize to them. However, the security guards in some factories are cocky. They think they are great. Everyone must obey their own orders. These people should be punished, and they should not stay in such posts. They should discuss everything with others, otherwise it will easily lead to various contradictions.
There are cameras everywhere in the factory. If someone steals something, it can be recorded by the camera, so the security guard can't open other people's bags. People who go in and out of the factory should not always listen to the security guards, which will form a habit. This kind of bad behavior should not be advocated. Local law enforcement departments need to popularize relevant legal knowledge for them, while ordinary people need to know laws and regulations related to personal privacy, so they can't be cheated by others and can't be blind.