If you for any reason are using one of these plugins, I would strongly advise you to delete and unload it ASAP. Valve probably disabled all knows methods that this plugin uses, but there may be some private plugins that may work, or you were planning on making it work again. This picture is taken at 18. April 2013 when TF2 updated.
the -insecure was a big white flag that it wasn't some Valve looked kindly upon. It has been on SPUF with a thread, and there where warnings against it in it. Seems even the -insecure doesn't protect one from VAC then.
imjustsayan. Peeps could have their own plugins, take that plugin and make it work, I have no idea, but its better to spread the word instead of people getting vac'd
What? You know this is completely unrelated to server owners/admins right? We had a small discussion on this yesterday if you want to read up on it.