These are the suspicious urls which have been found:
blocked a month ago:
xtendmedia.com
securebean.com
wan-tracker.com
crobo.com
santetend.com
lemode-mgz.com
daily-health-news.info
momiandi.com
adwynne728us.wan-tracker.com
Adwynne728us.wan-tracker.com and those unwanted pop-ups can be caused by adware or potentially unwanted programs (PUP) on the computer. The adware or PUP usually comes into the computer stealthily without uses permission along with the third-party programs, such as freeware apps, spam email or malicious links. The malware can generate unwanted pop-ups including the urls listed above including adwynne728us.wan-tracker.com.