For many small companies, the IT staff is a single person or even a consultant brought in to handle the business’s computing upkeep. The question of what your IT person knows about the inner workings of the company is well worth asking. It’s easy for an IT person to come to work in the morning, plug a small portable hard drive or SD Card into a tiny embedded system. At home, an IT snoop can reconstruct everything that went through your network and sift through it. The only way for a small company to protect against this type of internal threat is to use an outside consulting group.”]
Source: https://www.csoonline.com/article/2129006/what-your-it-pro-knows-about-you.html