In the world of modern telecommunications, SIP and VoIP numbers are the backbone of enterprise communication. While businesses often take extensive measures to secure their voice infrastructure, there’s one critical vulnerability that goes unnoticed : The SMS layer of your SIP number is wide open.
If you haven’t configured messaging on your SIP or VoIP number, any third party could silently activate SMS and start using your number to send messages — without your knowledge or permission.
This practice, known as SMS hijacking, is more common than most businesses realize — and it can lead to brand damage, security breaches, and compliance issues.
A silent, seamless solution to lock down the messaging layer of your SIP numbers — and protect your business from invisible threats.
In the US and Canada, voice and messaging routing are separate. You can have a SIP trunk configured for voice — but unless you’ve also configured SMS routing, the number is considered open for messaging.
This opens the door for bad actors to:
Worst part : Your voice carrier may never even know it's happening.
SendHub SMS Safeguard is a proactive security layer that silently activates and secures the SMS path of your SIP numbers — preventing anyone else from taking control.
Even if you’re not using messaging today, we secure the route now, so it’s protected when you do need it — or just to keep others out.
Locks your SMS path so only you can use it
No changes to your existing voice setup
Fast, silent protection — no downtime or porting
Blocks impersonation and spoofing risks
Messaging is ready when you are
You provide the numbers you want protected
We verify ownership and secure the messaging route
You continue using your existing SIP/VoIP setup — uninterrupted
Messaging is now safely locked, whether you use it or not
If you use SIP or VoIP numbers, and you’re not actively using messaging, you’re exposed.
SendHub SMS Safeguard is ideal for:
A regional VoIP provider recently discovered that one of their unused SIP numbers was being used to send promotional SMS for a crypto scam. The voice service was intact — but the SMS path had been hijacked. The number had been exploited for over 60 days before detection.
With SendHub SMS Safeguard, this kind of incident becomes impossible.
