The Cyberspace a.k.a. the Internet is full of bad guys wanting to mess with our computers right? Of course everyone of us have a firewall configured with proper access and inspection rules, don’t ya? Spamhaus and Team Cymru can help providing list of known bad IPs and subnets that should be filtered in our networks. Spamhaus DROP list “DROP (Don’t Route Or Peer) and EDROP are advisory “drop all traffic” lists, consisting of netblocks that are “hijacked” or leased by professional spam or cyber-crime operations (used for dissemination of malware, trojan downloaders, botnet controllers).