As you are well aware of Magento 2, being an amazing eCommerce platform Magento 2 has created its own level of excellence with an amazing quality of functions as well as flexibility. Covering all the drawbacks of Magento 1, it has become one of the finest web development platforms in an open market that brought a wind of Magento 2 migration. However, if counting its positive points still there is one negative point left i.e., security. If you own an eCommerce store and if there is no setup to stop hackers and spammers than you won’t be able to survive in an online market.
But, Magento development Commerce has come up with latest security updates for 2.2.3, 2.1.12 and 2.0.18 which will increase the security as well as will help in close Cross-Site Scripting (XSS), verified admin user remote RCE (Remote Code Execution) and also the other vulnerabilities. These Magento security releases have covered all the additional functional fixes and get more familiar with it, you can easily go through the release notes Magento Commerce 2.0.18, 2.1.12, 2.2.3 as well as Magento Open Source 2.0.18, 2.1.12, and 2.2.3.
If you are an owner of Magento based eCommerce store and you haven’t downloaded the former version of Magento 2 release then consider moving directly to Magento Commerce or Open Source 2.2.3
Before you go to the live website, always make sure you install each and every patch under a development environment or else you can face multiple issues on applying it to your live website. Also, consider migrating to Magento 2 before 17th of November 2018 if your eCommerce store is working on Magento 1 as after 17th of November, there will be no official updates rolling out for Magento 1. Support for Magento 1 will be no more. So, it will better for you to migrate your data to Magento 2.
For more further queries, consider searching out Magento 2 migration as well as security release note for the specific and required information you want.