Advantages and disadvantages of using VoIP
The continuous growth and excellence of VoIP represents the following benefits:
ease of installation and use (at the level of classical telephony)
call recording (including voice mail)
The risks of switching to VoIP include:
theft: this includes capturing server management and listening to recordings, and possibly ongoing conversations, as well as making calls from a number registered on this server
telephone spam is likely to increase. It can also increase system load.
it is also impossible to cancel the danger that the phone number will be hijacked, which may affect the transfer of classified information.
How to protect yourself from this kind of attack?
Physical security for servers and routers.
Store passwords in a secure place.
Without them, electronic hacking will be much more difficult.
If you use a computer to connect to VoIP, make sure that it is protected from attacks by the appropriate software (antiviruses, firewalls and anti-spyware).
Original: http://docs.yate.ro/wiki/About_VoIP.