Catalin Cimpanu reports on a vulnerability first reported by Project Insecurity researchers:
All major Canadian internet service providers (ISPs) have patched a vulnerability this week in their telecommunications relay services (TRSs).
TRS systems, or IP-relays, are telco-provided services that allow people with disabilities —such as deafness or speech disorders— to place calls to standard telephone users via keyboards or other assistive devices.
They are not critical equipment inside a telco’s network, but they are there, among the tens of other systems running on an ISP’s infrastructure, meaning they are part of the attack surface and they need to be properly secured.
Read more on BleepingComputer.