The original and copied content are indexed

[Shishirgano9]

Your own content suddenly and unexpectedly appears on other people’s websites.
Search algorithms do not recognize the original.
Therefore, only active action can help against external duplicate content.
SEO tips for finding and avoiding duplicate content
Basic tip:
Duplicate content is irritating. This should be avoided.
Strategic SEO therefore begins with your own website skype database and the various options available to strategically present your own products and strengths.
Arrange the best stage for your services. A strategic overview of your website also often reveals sources of duplication in the content.

Ensure the best performance: Read 10 tips for an optimized web presence.

Find duplicate content:
Tip 1: Basically, the Google Search Engine can be a good way to detect duplicate content. Excluded websites can be shown under Coverage in the Index menu . In the details you can then see Google's classification and reasoning.

Tip 2: Google can help even without this tool. Enter larger text blocks of yours to search and then click on this blue link in the introductory text when the result appears (source: Google search):

googlesnip

This also shows links behind which duplicate content may be hidden. A manual check-up for your content.