Lock-step "checker" cores running two steps behind sound like a good way to detect hardware failures, power glitches, or electrical interference that corrupt data processing. Can they help with hackers or malicious disruption? It would seem that whatever mechanism exists to allow software upgrades to alter the master and checker software could be exploited by hackers.
Certifying ISO 26262 compliance in order to meet worldwide mandates for tougher safety and security standards should get a leg up from Freescale's SafeAssure program, which also covers International Electrotechnical Commission (IEC) 61508 and other emerging standard. Details at: