<human>: I started a new job at the end of July and I'm still settling in. I am in charge of the finance operations but it is a family run business so a lot of people do many things. The business is doing very well and many employees have been here for years (5-20). They all seem to be in a rut and have not taken extremely kindly with me being hired here.

Of the employees, the one that seems to have the biggest problem with my start is the guy in charge of IT, Mark. He has an odd personality so we don't jive so great to start with. What I've learned since being here is that most people fear him since he knows the software, controls the server and basically has the president in his pocket. This isn't because the president particularly favors him, but because I think he's scared of what Mark can do to the company were they to upset him.

I think Mark sees me as a threat for a couple reasons... I'm young for my position, female, have some tech knowledge, and seem to be the President's new go-to regarding almost everything. I think most of the employees feel this way, as I am the youngest one that works here and most everyone is 5- 35 years my senior.

Because of this, I realize I'm already paranoid because of the animosity there, but I started getting kicked off the server, locked out of my computer, can't change my login password anymore, and other various tech issues. Mark gets passive aggressive in emails, doesn't acknowledge my presence, and refuses to tell me how he fixed items in our software. He isn't generally a very warm person but all these things seem to be pointing to his dislike of me.

So my two questions are: does anyone have some good tech resources I can look into for learning more about protecting my computer and my access? Maybe learn more about servers and admin privileges on secondary accounts? And secondly, which is why I'm in R/relationships, how do I deal with this coworker?

Can you give me the gist of the text in a nutshell?
<bot>: IT guy at new work seems to have it out for me. Any tech resources to protect myself? How do I handle this guy's animosity?