Automated Spam Filter

FreePBX Development
1

Asterisk/FreePBX 14

I am looking to develop an automated spam filter for incoming calls. The process would be:

  • Call comes in to custom destination.
  • Compare the caller id number (e.x. 555.555.5555) with the CDR (Maybe count all with callerid of 555.555.5555 between now-60 seconds).
  • If count is higher than x (e.x. 5), then add that number to the blacklist.

Is there a better way to do this? Are there already built automated solutions? Any suggestions/feedback?

Thanks in advance!

2

Additional question, if my approach is valid, what’s the best way to query the CDR DB in the dialplan for callerID comparison?

3

I’ve given up on spam flagging and blacklists and anything else that requires effort and moved to a white list. All previously unknown inbound caller IDs to my system must prove they are human, after which they get white listed. All outbound calls are automatically white listed: Of Robocalls and Whitelists

Spammers are starting to evolve, over the last several months a few robocalls have gotten through. If it gets worse, I will be adding a random captcha.

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