hacked creativity site - outdated plug ins

Hi!

I need a tip to handle this – my host says (se below) my site is using outdated plugins, but there are no available new versions in extensions manager...!
This problem is new to me, it hasn´t been an issue before using your templates trough the years. I dont know how to solve this, but some how manually in "plug in manager"
have heard about this before?
thanks,
Per

My host writes:
What I see when I look closely at your account is that the plugin "user" has a date of 2013-06-12 and which is also the majority of the earlier files used. This indicates that this plugin is abused and has not been updated for> 2 years. Same with the finder, extension, josetta_ext , k2 , k2store and quick icon .

Hi,
template is never a hacker backdoors, so probably plugins/components might be.
You have to update extension manually installing current version.
Second, I suggest to install RSFirewall or AkeebaTool