Most Magento 2 security extensions include login protection, admin access control, activity logs, brute-force protection, CAPTCHA, file change detection, and security alerts. Some advanced ones offer firewall rules, malware scanning, and two-factor authentication. Magento 2 security extensions block bad bots using user-agent detection, CAPTCHA, and IP blacklists. This reduces fake traffic, spam, and potential scraping of your store’s content and pricing data.