Let's Encrypt vs StopTheHacker: What are the differences?

Let's Encrypt: A free, automated, and open Certificate Authority (CA). Let’s Encrypt is a free, automated, and open certificate authority brought to you by the non-profit Internet Security Research Group (ISRG); StopTheHacker: Website security via Malware scan & automated cleanup by AI engine. StopTheHacker is the easiest way to protect your website from attacks by known and unknown malware and viruses using an award winning AI-engine and machine learning techniques. Security services from StopTheHacker protect your website and safeguard your the online reputation of your business, helping increase your revenue and reducing downtime due to compromise.

Let's Encrypt and StopTheHacker belong to "Security" category of the tech stack.