- Take note of what themes or plugins you installed or updated last.
- Check these files to see if there are weird things entered in there: then repair if you know how: .htacess, wp-config, index.php
- Install WordFence security plugin – the free version is fine!
- Scan your site with WordFence and do the recommended repairs!
- Update or remove the plugins or theme that you think made your site vulnerable to the hack.