One of the major problems in the Industrial Internet of Things cybersecurity is to provide availability of operation processes, in the other words, “cyber sustainability”. The survey describes actual the Industrial Internet of Things network-level cybersecurity issues that could be mitigated by appliance of “Security through obscurity” approach on the very edge of the Industrial Internet of Things cybersecurity. In the end, authors try to evaluate cybersecurity of the Industrial Internet of Things systems through an anonymity measure. Thus, availability and anonymity terms are tried to be connected