Malware is fueled my money. Hackers exploit websites and compromise the code. If they put links on a site, it will enhance their ranking. By doing this, the hacker of these links robs the website owner of link juice, giving them power and higher rankings in the search engines. These unscrupulous individuals who spend their career breaking into sites and putting links or malicious code to manipulate the site are highly paid and have no plans to stop. The tactics used to compromise a website are pure thievery; they will install malicious code to obtain valuable information from your database, usually financial information, passwords, customer information and similar types of personal data. The most important thing to remember is that a website can be fixed without spending very much money on the site. Please look at an excellent resource at https://www.WebsiteMalwareRemoval.net.
If you suspect you have malware, please take immediate action and hire a service that has a solid reputation. It can be easy and painless if you use a service that is qualified and honest. I recently had a chance to speak with the owner of this malware removal company, and he assured me that most sites could be fixed in 24 hours and at the cost of less than $100 (USD). If you have multiple sites on your hosting account the remainder of the sites, (if they have malware) will be cleaned at a reduced rate. The company backs up their work with a 30-day guarantee. If the malware returns, they will fix it for free. As a bonus, this company will harden website so hackers cannot break reinfect the site.
According to the owner of Website Malware Removal, the most important thing you can do is keep your sites updated. This means update WordPress, themes, plugins, etc. Also, change your WordPress passwords to make it difficult for potential hackers who want to break in and create problems. If you have any questions, call or chat to find out if your site has vulnerabilities and what measures you should take to clean your website.