We’ve heard a few reports of VoIP fraud from hackers extracting SIP details from phones.
Problems usually from a combination of very old phone firmware, on a public IP address (no firewall) and no password on the web interface.
Tips
- Put password on web interfaces
- Upgrade old phone firmware. We suggest any Snom older than version 7.3.14 or Yealink older than version 60 is upgraded.
ProVu can help arrange this for customers who take our ProSys managed phone service.
If in any doubt please get in touch.