write me exactly 1,500 words of these three topics with added research unAI detected and no Plagiarism:
1. Security in CMS: Explore 3 major security vulnerabilities and threats in various CMS platforms. Suggest and discuss 3 plugins for securing WordPress CMS websites.
2. A/B Testing for websites: Identify 3 techniques that can be used in a website and discuss each one of them.
3. CMS and SEO: Analyze the SEO capabilities of different CMS platforms. Investigate how CMS choices impact search engine rankings, propose 3 SEO plugins for WordPress CMS.
