A Theme on your website creates your site look and feel.
Avoid Malicious Nulled Themes
Nulled themes have had a wide impact on a website security. When choosing a theme for your website, avoid downloading themes from untrusted sources. Unfortunately there are many websites on the Web that distribute malicious themes. These themes are called “nulled” themes and they contain malicious code pre-installed. Only install themes from trusted sources.
The most popular source for themes is a official theme repository which you can find for example at WordPress.org. These are themes contributed by the community. They are open source and are generally reliable and infection free.
When using a theme from a source you don’t recognize, try Googling the site domain name in quotes and you may find reports indicating whether the site is reliable or engaged in a malware campaign.
Upgrade your Theme Regularly
Occasionally a security vulnerability may be discovered in your site theme that allows hackers to gain access. Any reliable theme maker will distribute fixes for vulnerabilities in the form of new theme releases. Make sure that you upgrade to the newest version of your theme if one is released after reviewing the changes. This will ensure that any fixes are incorporated into your theme.
Note: It is common practice among developers to customize themes. If you upgrade your theme, you may lose some changes that a developer has made. If you are using a theme that has been customized and you notice a new version has been released, work with your site developer to ensure that you don’t lose any customizations to your site when you upgrade. An option to preserve your customizations is to use child themes.
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