The release of the latest Kindle update has been stopped - here's what's going on

Amazon has a decent track record of releasing new Kindle updates regularly, with the latest 5.19.3 software update launched ...
来自MSN

Amazon fixes a Kindle bug that enabled account takeovers

Amazon has quietly closed a serious security hole in Kindle devices that made it possible for attackers to hijack customer accounts simply by getting a malicious audiobook or e-book onto an e-reader.