It is a penetration testing tool that focuses on the web browser.
Best Tools For Security
Browse 26 + Security Tools
Curated lists of tools, tips and resources for protecting digital security and privacy
Enter a URL and this tool will tell you if the website is violating GDPR laws.
DenyHosts is a script intended to be run by Linux system administrators to help thwart SSH server attacks (also known as dictionary based attacks and brute force attacks).
It scans log files (e.g. /var/log/apache/error_log) and bans IPs that show the malicious signs -- too many password failures, seeking for exploits, etc