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Programs and Programming: DICOM Viwers, Turtl, Weblate, Rust and Python

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  • Excellent Free DICOM Viewers – Medical Imaging Software

    DICOM (an acronym for Digital Imaging and Communications in Medicine) is a worldwide standard in Health IT and is provided by the National Electrical Manufacturers Assocation (NEMA). It’s the standard open image format used to handle, store, print and transmit information in medical imaging. This standard specifies the way medical images and metadata like study or patient related data are stored and communicated over different digital medias.

    DICOM is a binary protocol and data format. The binary protocol specifies a set of networking protocols, the syntax and specification of commands that can be exchanged with these protocols, and a set of media storage services. It’s an entire specification of the elements required to achieve a practical level of automatic interoperability between biomedical imaging computer systems—from application layer to bit-stream encoding.

    DICOM files can be exchanged between two entities that are capable of receiving image and patient data in DICOM format.

  • Encrypted Evernote Alternative Turtl v0.7 Includes Rewritten Server, New Spaces Feature

    Turtl was updated to version 0.7 yesterday, the new release shipping with a rewritten server, among other changes. I'll cover the new version in the second part of this article, after an introduction to Turtl.

    Turtl is a "secure, encrypted Evernote alternative". The free and open source tool, which is considered beta software, can be used to take notes, save bookmarks, store documents and images, and anything else you may need, in a safe place.

    There are Turtl applications available for Linux, Windows, macOS and Android, while an iOS application should also be available in the future. Chrome and Firefox extensions are available to easily bookmark the page you're on, great for quickly saving sites for later.

    The Turtl developers offer the service (hosted server) for free, but a premium service is planned for the future. However, the Turtl server is free and open source software, so you can install and use your own instance.

  • Weblate 3.2.1

    Weblate 3.2.1 has been released today. It's a bugfix release for 3.2 fixing several minor issues which appeared in the release.

  • This Week in Rust 255
  • Code Quality & Formatting for Python

    black, the uncompromising Python code formatter, has arrived in Debian unstable and testing.

    black is being adopted by the LAVA Software Community Project in a gradual way and the new CI will be checking that files which have been formatted by black stay formatted by black in merge requests.

    There are endless ways to format Python code and pycodestyle and pylint are often too noisy to use without long lists of ignored errors and warnings.

More in Tux Machines

Security: Hacker Summer Camp, Nexus Repository, Ransomware, Web Server Security

  • Hacker Summer Camp 2019: CTFs for Fun & Profit

    Okay, I’m back from Summer Camp and have caught up (slightly) on life. I had the privilege of giving a talk at BSidesLV entitled “CTFs for Fun and Profit: Playing Games to Build Your Skills.” I wanted to post a quick link to my slides and talk about the IoT CTF I had the chance to play. I played in the IoT Village CTF at DEF CON, which was interesting because it uses real-world devices with real-world vulnerabilities instead of the typical made-up challenges in a CTF. On the other hand, I’m a little disappointed that it seems pretty similar (maybe even the same) year-to-year, not providing much variety or new learning experiences if you’ve played before.

  • Nexus Repository Now Supports APT

    Beginning with version 3.17, Nexus Repository Manager supports APT (Advanced Package Tool) repositories. APT is a set of tools used to search, install, and manage packages on Debian, Ubuntu, and similar Linux distributions. With this new release, you can now host your own local APT repos. Developers benefit from no longer having to rely on connecting externally to a public repository every time an often-used package is needed. In the case of Debian-based Docker containers, the ability to locally cache Debian packages from public repositories can save copious amounts of time when rebuilding your containers. This can do wonders especially for containers built frequently in a CI pipeline and for the more traditional use-case of provisioning virtual machines.

  • Ransomware attack has hit 20 government agencies in Texas [iophk: Windows TCO]

    This week the state of Texas has joined the list of targets. According to Texas’s Department of Information Resources (DIR), more than 20 local government entities have been impacted by a ‘coordinated ransomware attack.’ DIR states that “the Texas Military Department, and the Texas A&M University System’s Cyberresponse and Security Operations Center teams are deploying resources to the most critically impacted jurisdictions.”

    No disclosure has beeen made regarding how much of a payment is being requested, though given recent attacks on other states the amount is likely to be eye-watering. Also absent is any information on which ‘local government entities’ have been affected.

  • Web server security – Part 8: Basic log file analysis

    Tools like lnav (“The Log File Navigator”) allow quicker analysis of log files. Instead of manually searching for attack-like behavior, you can use SQL queries, load and combine multiple files at once, and switch between different views.

    However, keep in mind that not only tools but also underlying processes and organization are important. You must know where log files are stored, how they are created and how long information is available. This requires a basic security concept. Understand the structure of your log files, and use customization of logging rules if available.

Chromebooks Switching Over To The BFQ I/O Scheduler

On Chromebooks when moving to the latest Chrome OS that switches over to a Linux 4.19 based kernel, BFQ has become the default I/O scheduler. BFQ has been maturing nicely and as of late there's been an uptick in interest around this I/O scheduler with some also calling for it to be used by default in distributions. Google has decided BFQ is attractive enough to enable by default for Chromebooks to provide better responsiveness. Read more

Debian: Salsa, Promoting Debian LTS and Debian Patch Porting System

  • salsa.debian.org: Postmortem of failed Docker registry move

    The Salsa admin team provides the following report about the failed migration of the Docker container registry. The Docker container registry stores Docker images, which are for example used in the Salsa CI toolset. This migration would have moved all data off to Google Cloud Storage (GCS) and would have lowered the used file system space on Debian systems significantly. [...] On 2019-08-06 the migration process was started. The migration itself went fine, although it took a bit longer than anticipated. However, as not all parts of the migration had been properly tested, a test of the garbage collection triggered a bug in the software. On 2019-08-10 the Salsa admins started to see problems with garbage collection. The job running it timed out after one hour. Within this timeframe it not even managed to collect information about all used layers to see what it can cleanup. A source code analysis showed that this design flaw can't be fixed. On 2019-08-13 the change was rolled back to storing data on the file system.

  • Raphaël Hertzog: Promoting Debian LTS with stickers, flyers and a video

    With the agreement of the Debian LTS contributors funded by Freexian, earlier this year I decided to spend some Freexian money on marketing: we sponsored DebConf 19 as a bronze sponsor and we prepared some stickers and flyers to give out during the event. The stickers only promote the Debian LTS project with the semi-official logo we have been using and a link to the wiki page. You can see them on the back of a laptop in the picture below.

  • Raphaël Hertzog: Freexian’s report about Debian Long Term Support, July 2019

    Like each month, here comes a report about the work of paid contributors to Debian LTS.

  • Jaskaran Singh: GSoC Final Report

    The Debian Patch Porting System aims to systematize and partially automate the security patch porting process. In this Google Summer of Code (2019), I wrote a webcrawler to extract security patches for a given security vulnerability identifier. This webcrawler or patch-finder serves as the first step of the Debian Patch Porting System. The Patch-finder should recognize numerous vulnerability identifiers. These identifiers can be security advisories (DSA, GLSA, RHSA), vulnerability identifiers (OVAL, CVE), etc. So far, it can identify CVE, DSA (Debian Security Advisory), GLSA (Gentoo Linux Security Advisory) and RHSA (Red Hat Security Advisory). Each vulnerability identifier has a list of entrypoint URLs associated with it. These URLs are used to initiate the patch finding.

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