The essay cost Geer his job at the security consulting firm AtStake, which then counted Microsoft as a major customer.(http://cryptome.org/cyberinsecurity.htm#Fired) (AtStake was later acquired by Symantec.)
These days Geer is the Chief Security Officer at In-Q-Tel, the CIA’s venture capital arm. But he’s no less vigilant of the dangers of software monocultures. Security Ledger notes that, in a post today for the blog Lawfare (http://www.lawfareblog.com/2014/04/heartbleed-as-metaphor/), Geer is again warning about the dangers that come from an over-reliance on common platforms and code. His concern this time isn’t proprietary software managed by Redmond, however, it’s common, oft-reused hardware and software packages like the OpenSSL software at the heart (pun intended) of Heartbleed.(https://securityledger.com/2014/04/the-heartbleed-openssl-flaw-what-you-need-to-know/)
“The critical infrastructure’s monoculture question was once centered on Microsoft Windows,” he writes. “No more. The critical infrastructure’s monoculture problem, and hence its exposure to common mode risk, is now small devices and the chips which run them," Geer writes.
What happens when a critical and vulnerable component becomes ubiquitous — far more ubiquitous than OpenSSL? Geer wonders if the stability of the Internet itself is at stake.
“The Internet, per se, was designed for resistance to random faults; it was not designed for resistance to targeted faults,” Geer warns. “As the monocultures build, they do so in ever more pervasive, ever smaller packages, in ever less noticeable roles. The avenues to common mode failure proliferate.”"
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