The security situation with existing bio-phylacteries is so bad that all of the worst malware deployed against them are actually believed to have been naturally occurring.
The backup procedure is, quite frankly, an embarrassment; all data transfer protocols are truly hopeless at capturing internal experiences without a massive loss rate. And despite widespread consumer opinion to the contrary, hybrid units aren’t even half of a proper backup, and even if they were, the hassle in producing and formatting them is astronomical.