A couple of tips: 1) There are URL expanders with API to battle URL shorteners, here are some I found with quick googling: http://www.linkexpander.com/api htt

A couple of tips: 1) There are URL expanders with API to battle URL shorteners, here are some I found with quick googling: http://www.linkexpander.com/api http://www.linkexpander.com/api https://unshorten.me/api https://unshorten.me/api (The API is limited to 10 requests per hour for new short URLs - too slow for you, probably) http://pro.urlex.org http://pro.urlex.org (paid) 2) You could disallow URLs which are detected with 2 or more engines by VirusTotal: https://www.virustotal.com/en/documentation/public-api/ https://www.virustotal.com/en/documentation/public-api/