As a matter of fact, this is a legitimate program ranked about even with microsoft services themselves as far as number of downloads and users. For more information on technical specifics of that program, see the following link:
What is happening with your system is that avanquest.com actually uses a third-party cookie system, which will of course trigger your norton if the security settings are set properly. (Usually there is an "accept third-party cookies" button somewhere that will make that security message go away usually located in the browser, "Tools", "Internet Options").
Also, you may end up having a conflict if you are in Internet Explorer and have "smart screen filter" on while Norton has "anti-phishing" enabled. There is a known conflict there. I have included a screen shot of avanquest.com, you can see the cookie banner at the bottom, which seems to be a one-time only pop-up that can be blocked easily. Audials is also a known program as well that this company makes.
After reviewing all data available on the company and my prior known questions regarding them, I can say the software is real, but it will only likely do as it should, and possibly not a good job of it. Customer service is near non-existent for that company as I have seen a number of questions on how to contact them. There may be unexpected and unwelcome pop-ups in the software, or additional programs that you do not want or need installed as part of a "package". Just be careful to uncheck everything but the program you want to install when you do install, and give it a test run, if anything you can remove it, and the instructions are on the first page link above. :)
You should also be aware that Photoshop has more capabilities and equivalent capacity to manage your pictures. Please let me know if you have any further questions, and don't forget to accept and rate!