I noticed these on my error logs, it is an attempted security issue? xypfthemes.rar /kdtnad.zip 1 /yjticeshi.rar /upxycom.rar /oepe666.rar /aydw\xb7\xfe\xce\xf1\xc6\xf7.rar /luvtwow.rar I don't have any .rar files on website?
Those look fishy to me i would investigate that. Possibly someone trying to upload or execute those files. Make sure anywhere you accept data inputs that they are being sanitized.