Winning the Battle Against Scam Calls – How We Mitigated Caller ID Spoofing
summary
A Finnish operator implements an SS7‑layer mitigation that checks caller number ranges, uses Any Time Interrogation queries and visitor location to drop or strip spoofed CLI before connecting calls; regulators (Traficom) coordinate a national rollout and law enforcement shares fraud data. Result: falsified inbound international calls fall from the ~70–90% peak to about 3% falsified, i.e. 97% legit, crippling the scam script in weeks and leaving only low‑volume residual fraud.
AI-written summary · about
chapters (6)
- 0:00Introduction and agenda
- 2:17The scam call crisis
- 7:45Technical solution overview
- 21:45Nationwide collaboration
- 29:32Law enforcement perspective
- 38:24Q&A and final takeaways
related talks
53mCall Me: Gathering Threat Intelligence on Telephony Scams to Detect Fraud
54mLifecycle of a Phone Fraudster: Exposing Fraud Activity
20mFraud fighting: leverage real-time network intelligence
45mVoice Security - Get Up to Speed on This Attack Vector
09mModern fraud: A deep dive into Vishing
51mKnowing The Robocallers: Illegal Call Centers And Efforts To Stop Them
26mThe Forgotten
28mUnderstanding IRSF Fraud: Protecting Against...