Well, I agree there are major ethical concerns about this topic. You're going to have to trust your technician with your data to some degree. If you don't, don'

Well, I agree there are major ethical concerns about this topic. You're going to have to trust your technician with your data to some degree. If you don't, don't keep it on your personal device but on an external or have it encrypted. If a user comes in with a virus I would expect the technician to explain in educate where the virus came from. That would involve browser history and downloads. If a technician worked on my device I would expect them to back it up in case of data loss. That data should be held until the end user is satisfied, then securely deleted.