Sounds like you have a keylogger on board. Don't you use any antispyware software like Spybot Search and Destroy, Adaware, SuperAntispyware, etc. Suggest you download some, install, update and run scans.
Surface Pro (2017) vs Surface Pro 4
20 groundbreaking 3D animation techniques
How to mine Bitcoin on Mac
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.