How Do I Know If My WordPress Website Is Hacked?

There are some common signs that your website has been hacked:

1. Website traffic experience a sudden drop.
2. You notice some links leading to spam websites added to your website (usually to the footer).
3. Defaced homepage.
4. You are unable to login to your WordPress account.
5. You didn’t allow user registration, but you notice new accounts appearing in WordPress.
6. Your site scanner plugin (like Sucuri) notified you about unknown files and scripts on your server.
7. Your website becomes slow or unresponsive because of DDoS attacks.
8. Your server logs show some unusual activity.
9. You cant’s send or receive emails with your WordPress account (there is a chance that it’s been used by hackers to send spam emails).
10. Suspicious cron jobs (these are scheduled tasks on your server).
11. Your website search shows wrong titles or meta discriptions.
12. You notice that core WordPress files have been changed.
13. Your website randomly redirects its visitors to an unknown website.