#Meta ‘“had reminded partners of contractual obligations to ensure #privacy & #security when delivering #SMS messages…” But we didn’t receive similar confirmations of enhanced due diligence from other companies — including, perhaps surprisingly, #Signal.”’ #SS7 https://medium.com/@lighthousereports/using-leaked-data-to-examine-vulnerabilities-in-sms-routing-and-ss7-signalling-8e30298491d9