New IT policy, not sure what to do about working from personal device

I work for a company that was bought out by another company. When I started with the original company I was using my own device for work as there were no company policies for this, no software required to be installed, nothing mentioned by HR or in contract about limitations on this. Almost like a freelance position.

The new company is now sharing their own IT policies which makes nervous as it states that any personal devices need a written …

device it policy own personal policies policy privacy software work working