The Penguin Update is an algorithm that was

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updated to crack down on fraudulent activities and lower the ranking of content that performs poor link manipulation. It was introduced in 2012 and has been updated several times since it was integrated into other algorithms, and is updated daily.

This applies to pages that are deemed malicious, such as "use of paid links," "irrelevant or hidden links," and "mirror sites."

Panda Update
The Panda Update is an update aimed at cracking down on low quality content, placing portugal phone number resource high quality content at the top, and placing low quality content at the bottom. It was announced in 2011 and implemented in Japan in 2012. Like the Penguin Update, it has been updated multiple times, but was later integrated into other algorithms and updated daily.

The pages that are targeted are those that are "unreliable," "outdated," "copy content," etc.

White Hat SEO
White hat SEO is a method of aiming to rank higher by publishing information that users want, without relying on malicious methods. White hat SEO, which emerged following the crackdown on black hat SEO and algorithm updates, follows Google's guidelines and places emphasis on high-quality content that focuses on user needs.