Indeed, and this may already be ongoing. Programmers find a handful of vulnerabilities in core Bitcoin software every year [0], and there is no way for us to know if those bugs were planted intentionally. Some of these bugs caused the supply inflation to be wildly different than what is claimed (so much for "there can only less than 21mm coins"). We also don't know what bugs currently exist in the software that are or will be exploited. We also don't know if any of the core contributors and influencers in the project actually work for the CIA/NSA/PRC/etc.

[0] https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposu...