Updates for Wordpress Sites and PHP

I have three Wordpress sites that are very old and need updated plugins, WP core, themes and update to latest PHP. Some themes are very outdated and may not have support for any more updates. There’s been a ton of malware floating around and lots of out dated sites getting infected. Please scan for any malware and remove. Ensure the site have hardened security in place. Please review and unused or suspicious plugins. Make any updates needed. Let me know if there is anything else. I have several other websites that are old and out of date that I will need help updating. I can send all credentials after you accept.