Cerberus

(sorry for my english)
I think that despite of it looks good, the symbol doesn't work in the concept of security, it connotes me only "communication" or "union"... and you must work in the tag-line, if you have a powerful uppercase typography in the main logo, I recommend use lowercase in the tag-line; and you can use another color on it.

I, however, like the symbol playing back to Cerberus, the three headed guard dog to the underworld. He's basically the epitome of security. Nothing in or out without him knowing. I like the main font other than the U seems awkwardly narrower than the rest of the characters and the kerning needs to be addressed. I also think you shouldn't use a compressed font for the subtext. It makes it difficult to read.

I agree with my man Jon.

But the Cerberus thing for security business has been over used a bit, hasn't it?