I have had two WordPress blogs. That was in a time when I was doing virtually no online advertising, and until I found time to deal with the situation (weeks later), these sites were penalized in the main search engines. They weren't eliminated the ratings were reduced.
There is a part of config-sample.php that's led'Authentication Unique Keys.' Four explanations that appear within the block will be found by you. A hyperlink is how to fix hacked wordpress within that part of code.You have to enter that link into your browser, copy the contents which you return, and change the keys you have with the specific keys given by the website. That makes it harder for attackers to generate a'logged-in' dessert for his response your site.
Everything you have worked for will proceed with this should the server of your site return. You will make no sales, get signups or no visitors to your website, until you have the website back up 32, and in short, you are out of business.
Yes, you need to do regular backups of your site. I recommend at least a weekly database backup and a monthly "full" backup. More, if at all possible. If you make additions and changes to your site, definitely. If you make changes multiple times every day, or have a community of people that are in there all the time, a backup should be a minimum.
Pathological-looking phrases that were whitelists and black based on which field they look within, in a page request. (unknown/numeric parameters vs. known post bodies, remark bodies, etc.).
Change your password, or your WordPress password and admin username and collect and utilize check that other WordPress safety tips to keep hackers out!