4 Websites on My server have had a line of code injected into the index file

4 Websites on My server have had a line of code injected into the index file, potentially a malicious attack. I need these changed, so they show the original site on the following domains: (ALL WORDPRESS SITES) [login to view URL] [login to view URL] [login to view URL] [login to view URL] I would also like to find out what Time the files for these sites were last edited. A gentleman helped Me earlier and fixed one site (wasn't aware of other problems at the time) and said a line of code had been added to the Index file sending it to [login to view URL] (a website that was on our server). Immediate work required. Thank You!