Since 2 days I am getting squared ads popups on all web sites (this one too...) on the left bottom side of my browser. I sometimes get another one in the bottom middle (rectangular).
- I am seeing them on almost all web sites
- I see them on all devices connected to my wifi network (ipad, 2 PCs, phone)
- I see them with IE and Chrome
- I tried many antivirus scans: nothing found
- This does not happen when I am connected to another wifi network, only mine
- I factory resetted my modem (Motorola SBG900)
- I don't have any suspect add-on or program installed
Thank you for your help.