The article is mostly clickbait. It sensationalize a reality we are already used to: fake advertisement. I'm from Brazil by the way.

I just want to talk about a specific point in the article. When they refer to the digital literacy as lacking compared to the wide adoption of technology. Android is the most common system here, more so if you don't have any money. The one that people find surprisingly complex or difficult. Which means nothing because it's social engineering using people with smartphone cameras.

One wonders how they market their services : "come to us, we are the best fake reviewers you can find on the web and these 5-star reviews prove it!"

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This is why trust on the internet is very important.