Bots And Hackers

Just found a folder of pics renamed and hidden attributes attached to them. Some were uploaded to here a month ago. Just got rid of something nasty in my browser as well. Attributes were (:com.dropbox.attributes:$data). I don't use dropbox and only found this when backing up files to flashdrive. Pics posted have had visitors from russian federation ip address 194.8.235.240 which when googled shows banned on anti hacker site.

Anyone else experience anything like this?