Most Important Cyber Threat Intelligence Tools For Hackers & Security Professionals 2021

Most Important Cyber Threat Intelligence Tools For Hackers & Security Professionals 2021
Alexa Top 1 Million sites
Probable Whitelist of the top 1 Million sites from Amazon(Alexa).
Apility.io
Apility.io is a Minimal and Simple anti-abuse API blacklist lookup tool. It helps users to know immediately if an IP, Domain or Email is blacklisted. It automatically extracts all the information in realtime from multiple sources.
APT Groups and Operations
A spreadsheet containing information and intelligence about APT groups, operations and tactics.
AutoShun
A public service offering at most 2000 malicious IPs and some more resources.
BGP Ranking
Ranking of ASNs having the most malicious content.
Botnet Tracker
Tracks several active botnets.
BOTVRIJ.EU
Botvrij.eu provides different sets of open source IOCs that you can use in your security devices to detect possible malicious activity.
BruteForceBlocker
BruteForceBlocker is a perl script that monitors a server’s sshd logs and identifies brute force attacks, which it then uses to automatically configure firewall blocking rules and submit those IPs back to the project site, 
C&C Tracker
A feed of ..

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