Hi this software is sold on Amazon(Amazon canada and Amazon India ) I downloaded the program. when I scanned it in VirusTotal, 13 antivirus programs saw it as harmful. is ttb internet security malware ?
If you find a single antivirus solution that satisfies your needs and protects you, there is no reason to switch from it.
Anyways, I've never heard of that antivirus.
But as silversurfer said above, don't go purchasing any unknown AV. Usually you'll end up getting a software that has a low detection rate compared to other AV (Kaspersky, Bitdefender, Malwarebytes and others) or a software that just rents the engine from another famous AV (like Bitdefender).