Latest Google Penguin Update

Google propelled the Penguin Update in April 2012 to catch the websites that are spamming Google’s search results. This update is mainly aimed at decreasing search rankings of websites that violate Google’s Webmaster Guidelines and use black-hat SEO techniques to artificially increase ranking of their websites, by obtaining or buying links through some wrong practices. The primary reason behind this update was to penalize websites that use manipulative techniques for achieving high rankings. 

As per Google’s estimates, Penguin influences approximately 3.1% of search queries in English, and approximately 3% of queries in languages like German, Arabic and Chinese, and an even much bigger percentage of them in “highly spammed” language categories. Pre-Penguin sites normally utilized some negative external link building tactics to rank good in SERPs and boost their traffics.

However, once Penguin was introduced it implied that content was vital and those with incredible content would be recognized and those with little or spammy content would be punished.

Some confirmed Google Penguin SEO updates are
Penguin 1-on April 24, 2012 (impacting around 3.1% of queries)
Penguin 2-on May 26, 2012 (impacting less than 0.1%)
Penguin 3-on October 5, 2012 (impacting around 0.3% of queries)
Penguin 4(a.k.a. Penguin 2.0)- on May 22, 2013 (impacting 2.3% of queries)
Penguin 5(a.k.a. Penguin 2.1)- on October 4, 2013 (impacting around 1% of queries)
Penguin 6(a.k.a. Penguin 3.0-) on October 17, 2014 (impacting less than 1% English queries). On December 1, 2014, Google confirmed that the update was still rolling out with webmasters continuing to report significant fluctuations during Google SEO updates 2014.
Penguin 7(a.k.a. Penguin 4.0)- on September 23, 2016