November 29, 2024
I recently replaced the screen of a Google Pixel 3A XL, the new panel is made by tianma and worked well under Andoird, until it doesn’t. On every boot up the screen will work until the phone went to sleep, and then the screen will stop responding to touch, until another reboot. After the screen became unresponsive, the rest of the phone would remain responsive during the locked state and it’s possible to unlock the screen with fingerprint, but there is no way to make the touchscreen responsive again without reboot.
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October 5, 2024
I believe buying a Kindle in 2024 is a bad idea, even if you only intend to use it for reading DRM-free locally stored ebooks. Basic functions such as organizing books into folders/collections are locked until the device is registered and with each system update the interface has became slower and more bloated.
Initially I purchased this device because Amazon book store isn’t too bad and it’s one of the easier way to buy Japanese books outside of Japan, but with all the anti-features Amazon add in I don’t think it’s still worth using.
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July 5, 2024
The easiest way to change/set PIN for FIDO2 token seems to be with Chromium/Chrome:
Plug in the token Launch Chromium, navigate to chrome://settings/securityKeys, or click Settings -> Privacy and Security -> Security -> Manage security keys Click Create a PIN, if you don’t have a PIN set already, a new PIN will be created, otherwise you will be asked to change the existing pin Alternatively you can also wipe the token with the Reset option
May 7, 2024
I’ve been daily driving the PinePhone Pro with swmo for some times now, it’s not perfect but I still find it be one of the most enjoyable devices I’ve used. Probably only behind BlackBerry Q30/Passport which also has a decent keyboard and runs an unfortunately locked-down version of QNX. For me it’s less like a phone and more like a portable terminal for times when using a full size laptop is uncomfortable or impractical, and with the keyboard it’s possible to write lengthy articles on the go.
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April 23, 2024
The melting plastic and the smoke # The PinePhone keyboard contains a battery, which will be used to charge the PinePhone when the keyboard is attached. Althrough there are existing warnings on the pine64 wiki which sums up to ‘don’t charge or connect anything to your pinephone’s type C interface when the keyboard is attached’, my two pinephone keyboards still managed to fry themselves, with one releasing stinky magic smoke and the other melting the plastic around the pogo pins on the pinephone backplate.
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April 20, 2024
I didn’t take as much notes on day 2 and 3, so I merged them into a single article.
Wednesday, 17 Apr 2024 # Keynote: How Adversaries Use AI # Adversaries:
Nation States Ecrime Hactivism Not always clearly separated LLM can help eliminate common language mistakes, perform better social enginerring
Many adversaries are trying to integrate LLMs into their workflow, with varying results
Time frame from initial foothold to lateral movements is getting shorter, due to better toolings?
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April 16, 2024
sched_ext - Write your own Linux thread scheduler in BPF # BPF made creating new scheduler simpler
with strong safety guarantee to not break the system, the side effects of bad scheduler are confined. run a binary to enable your scheduler, stop the binary to revert to default Scheduling problem is now more complicated due to increasing complexity of workload/CPU design
BPF provides reliable access to critical data structures inside the kernel
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April 12, 2024
Here you can find a list of links related to my topic which I find useful or just interesting.
Meta # Info page https://2024.everythingopen.au/schedule/presentation/24/
Slides EO2024.Slides.exploring.mobile.linux.security.odp
Recording XXX to be processed
VerityMobile GitHub :: ZhanYF/veritymobile
Demo # Access Measurements from Linux Userland
Sign in to GitLab with fTPM-backed FIDO token
fTPM-backed SSH Identity
Disposable Web Session
OP-TEE # Docs Index and high level introduction # https://optee.readthedocs.io/en/latest/general/about.html
Secure Storage # https://optee.readthedocs.io/en/latest/architecture/secure_storage.html
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November 1, 2023
As an OpenBSD package maintainer, I often need to watch for updates on packages I maintain. I used to do this using repology.org, which has the benefit of tracking package updates in many distros, but it can be unreliable for OpenBSD packages due to network delay and parsing problems.
One better way to watch for upstream update is using OpenBSD’s portroach service, it monitors new upstream release and provides a JSON API that can be combined with jq(1) to produce clear information.
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October 21, 2023
git-annex(1) is a versatile and cross-platform tool build on top of git, it can sync, backup, archive files and provides many useful primitives for building customized workflow and storage system, for example, by combining git-annex with gcrypt, it’s possible to fully encrypt data stored on a remote.
Partially due to its versatility, it has a steeper learning curve than some other tools in this field and it took me some time to figure out how to make it work for me, here is a quick guide that documents my journey.
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