Yet more evidence that software update transparency via verifiable logs (sometimes known as blockchains) is becoming increasingly important:
A million computers were compromised through a malicious update, and it took a year for people to discover it.
Some proposals for software update transparency systems include:
eprint.iacr.org/2017/648 (CoSi-based)
arxiv.org/abs/1711.07278 (Trillian-based)
arxiv.org/abs/1712.08427 (Bitcoin-based)