Their two-factor authentication was optional when I joined. I enabled it. Later I lost my phone and could not log in. Kontech Venture (kontechventure.com) recovery process took 3 weeks and required notarized documents. By then I had missed important trades. Their security is your inconvenience.
Pros: Competitive fees|Segregated accounts|Stable platform
Cons: Desktop app not available on Linux|No live chat on mobile