Seo_Cache_Static Folder At Root

Today I saw a folder which name is "seo_cache_static" and "cache_customertr" file including following content:

a:2:{s:4:"data";a:1:{s:8:"tr_index";a:1:{s:9:"index_s_0";s:0:"";}}s:6:"expiry";i:0;}

Thisis the first time I have ever seen that file and folder. What does it mean? I don't think that it's a core file. What might it be?

I would either delete it or change the names of the files. Those files are not part of anything in the core. Have you had anyone working on your site lately who might have put them there for diagnostic purposes?

I would either delete it or change the names of the files. Those files are not part of anything in the core. Have you had anyone working on your site lately who might have put them there for diagnostic purposes?

I have deleted it. yeah, I thought like you. It couldn't be a part of files or process in the core. No, noone had access to work on any directory. Thanks for your info.

If no one had access and it's not generated from the core then you've obviously been hacked. I would suggest changing all passwords related to your site (ftp, ssh, cpanel, whm).