How secure is Radzen?

I've used the Radzen demo version and really like it and think it's a good match for our needs, but our IT director doesn't want to buy it for concerns that it might have security issues (something like Solar Winds, I assume). I think he has suspicions about geographic connections to Eastern Europe. How can I know that it doesn't contain malware? How can I assure him that it doesn't?

Maybe you can use an antivirus?