Under my website data (Settings Safari Advanced) are websites using lot of data which have never visited before. Several of these listed sites are for tracking internet usage. Has my phone been compromised other explanation

I have recently discovered a website called bluecava operating on my iphone 4s, according to my website data log.  I've never been to this site, but according to my data log this site is using a lot of data, along with other sites which I have never visited before. Does anyone know anything about bluecava (I've done my research, but I'm not finding information about individuals using this to track someone), or have any other explanation for seeing un-visited sites on my data log?

Someone recently mentioned phone "cloning" to me, meaning that my iphone may be accessed remotely.  Any information is greatly appreciated!