How to increase Joomla website security

If your blog or commercial site is built on CMS Joomla. then you should understand that, like all sites built on open source, it is the target of a hacker attack. Constantly, both the developer and hackers find new multiple Joomla security issues . These include vulnerabilities like Execute code, Joomla cross-site scripting( XSS) , File intrusion, SQL injection etc.
This means that your site with a high degree of probability has a malicious code.
Types of malicious code that can be found on Joomla sites: backdoors, rootkits, trojan horses, worms, fraudtools, adware, spyware, hidden links, redirection and etc.  A lot?, So maintaining site security is important from the first day of work on the site.

Joomla site security scan for malware and vulnerability detection What to use for diagnostics scanner or extension? As you understand to monitor the security of your site you need all the time.
You can scan your site or install the extension.
It is only important to understand that external scanning only checks the code of the site pages.
Most scanning services for searching malicious code and vulnerabilities generally check only the code on the main page of the site. Which extension to choose? Therefore, we recommend that you always install some kind of antivirus scanner extension on your website. These extensions scan the file system of the site. Many malicious files are in the file system and not in the code.

WebDefender Joomla website security extension, one of the antivirus scanners that you can install

Check if Joomla website Blacklisted

It is also important to scan your site for blacklisted checking – Cobweb blacklist scanner check yuor Joomla site in 11 database of blacklisted websites, and they provide tools to check the status of your website.
Blacklist database – Norton Safe Web, Google Safe Browsing, McAfee SiteAdvisor, Phish Tank, Yandex Antivirus, MXToolBox, Barracuda RBL, SpamHaus DBL, SpamHaus ZEN, URI Blacklist, Opera Browser

Keep Joomla website safety Very important! To maintain a high level of security you need to apply preventive procedure

• Update the Joomla software and all its components including core files and extensions.
• Make regular offsite backups of your site
• Use a Joomla antivirus and scan tools, such as WebDefender that provides security
  to proactively detect malware that a hacker can insert on your Joomla site
• Secure Your Admin Panel With Better Two-Factor Authentication
• Set firewall to prevent any further website infection. This can help block Brute Force
  and Hacker attacks.
• Create Strong Passwords to Keep Your Website security