An Apple engineer who helped launch the iPod said he helped the US government build a secret version of the device that could covertly collect data.— Arstechnica
George from Designed by Cave has a beautiful piece on the UX of LEGO interface panels (those sloped 2×2 bricks with stuff printed on them). He even utilizes them to illustrate principles of UI design. 😀
Simon Pitt writes how we have moved away from files as a representation of data and how we may have lost some freedoms on the way and gained weird new habits.
Years ago websites were made of files; now they are made of dependencies.
Chris Down explains how swap’s main role is being the missing backing store for anonymous (i.e. allocated by
malloc) pages. While all other kinds of data (e.g. paged in files) can be reclaimed easily and later reloaded, because their “source of truth” is elsewhere. There’s no such source for anonymous pages hence these pages can “never” be reclaimed unless there’s swap space available (even if those pages aren’t “hot”).
Linux has historically had poor swap (and by extension OOM) handling with few and imprecise means for configuration. Chris describes the behavior of a machine with and without swap in different scenarios of memory contention. He thinks that poor swap performance is caused by having a poor measure “memory pressure.” He explains how work on cgroup v2 might give the kernel (and thus admins) better measures for memory pressure and knobs for dealing with it.
Kashmir Hill went 6 weeks without the big 5 tech giants (Amazon, Facebook, Microsoft, Google, Apple). It seems you basically have to become a level 5 vegan especially if you also avoid anything hosted/using their cloud services (e.g. AWS, Azure, GCloud).
Certain types of ECC RAM can also be exploited with Rowhammer. ?
Dan Luu has a nice collection of interesting Hacker News posts.
The Rowhammer class of exploits never stops to amaze.
Sadly WhatsApp will start sharing your account information with Facebook. You can’t prevent Facebook getting the data, you can only opt-out of them using it for ads.