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Jul 03, 2018 Vulnerability In Mac OS Went Unnoticed For Years. Posted by chrysalismsp On July 3. Chrysalis MSP $$$ 14550 Torrey Chase Blvd Suite #470 Houston, TX 77014; Phone. Jul 29, 2019 Apple is in the news again, but not for anything good. Jonathan Leitschuh, a security researcher, recently unearthed a serious security flaw that allowed a hacker to activate a Mac computer's webcam without alerting the computer's owner. Feb 18, 2021 Not long ago, a critical flaw in Linux SUDO was discovered and is being tracked as CVE-2021-3156. Given the nickname 'Baron Samedit,' it's a flaw in a Unix program that allows system admins to provide root level privileges to any users listed in the 'sudoers' file.

Released:

Chrysalis Python Cloud SDK for streaming live media

Project description

This repository houses the official Chrysalis Cloud Python SDK for use with Chryscloud.com cloud, end-to-end media streaming and analytics platform.

Chrysalis Cloud SDK aims to provide easy and powerful control over live media streaming consumption and ingestion into various machine learning libraries in the cloud.

If you're looking for a hybrid edge-cloud solution we recommend you look into our open source project Chrysalis Edge Proxy

Contents

• Usage
  • Example
• Development

Features

• Easy integration with numerous machine learning platforms
• Support for easy access to RTMP live video stream from Chrysalis Cloud (live video/audio streaming)
• Supporting for any camera that has RTMP streaming abilities
• Deals with complexities of media stream management
• Secure access media streams

Prerequisite

Check FFmpeg version:

Installation

Create environment.yml file.

You can easily add to this file dependencies and additional image manipulation libraries such as Pillow and OpenCV.

If you need GPU support, you can check how to work with Anaconda and GPU packages.

Create new conda environment:

Usage

• all returned images are in numpy format.
• all returned images are in bgr24 pixel format.

Check ChImage attributes for more details

Probe

Probing returns information about the streaming media. It gives you a sense if the camera is streaming, when it was last seen, what is the frame cache duration stored on the Chrysalis streaming server.

The ProbeInfo object returns the information about cached frames as well as assessment of FPS (frames per second) streamed from the camera.

start_timestamp and end_timestamp are UTC times in milliseconds since epoch.

Retrieve latest video image from a live stream

Chrysalis Cloud Python SDK takes care of delivering crisp and clear images from your live video stream, regardless of the processing speeds, speed ups or slow downs because of the latency or even if your camera disconnects from the network.

ChImage object returned from VideoLatestImage has a following structure:

VideoLatestImage returns None image when frame not available.

VideoLatestImage might return None in cases when querying for the next frame is faster than the camera stream produces them.

The SDK will not return already consumed frames (images) in the perpetual reading of the stream.

You can also consume live stream images from mutliple sinks in case when you need to run the same live stream (e.g. the same image) through multiple Computer Vision algorithms. Not returning already consumed frames applies per SDK instance basis.

Retrieve video images from the past

Based on what is available in the frame cache on Chrysalis streaming nodes you can also query video images from the past. Use Probing in case you need more information how much back in time you can query the video stream.

Thumbnail image from video stream

Thumbnails are in bgr24 format in numpy array. In fact all images for local consumption are in the same format. This makes it easy to consume images in any processing and analytics after.

Due to the nature of H.264 straming it is not guaranteed the successfulness of the Screenshot method. In case no screenshot was found img = None.

This function tries to traverse the H.264 buffered stream seeking for I-Frame. the closest I-Frame to given dt (timestamp) is returned if I-Frame found.

Turn Storage On and Off

Based on video analysis you can decide to store a stream into the permanent Chrysalis Cloud storage. Since live video form a webcam might be streaming 24/7 we don’t necessarily need to store everything, but rather we can perform simple analysis (e.g. movement detection, face recognition, …) to decide when and for how long we want to permanently store that video segment.

Coming soon

Example

All examples are in /examples folder. Create conda environment from prepared environment.yml in examples folder before you run the examples.

Display live stream with OpenCV

Install FFmpeg

Mac OS X

Ubuntu >= 18.04 LTS

On Ubuntu 18.04 LTS everything can come from the default sources:

Ubuntu < 18.04 LTS

On older Ubuntu releases you will be unable to satisfy these requirements with the default package sources. We recommend compiling and installing FFmpeg from source. For FFmpeg:

Installing

This should install it's dependencies also.

Please read CONTRIBUTING.md for details on our code of conduct, and the process of submitting pull requests to us.

Current version is initial release - 1.0.0

This project is licensed under Apache 2.0 License - see the LICENSE for details.

Release historyRelease notifications RSS feed

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Hashes for chrysalis-1.0.0-py3-none-any.whl

Apple Turns Off Mac OS Feature For Security ... - Chrysalis MSP

Hashes for chrysalis-1.0.0.tar.gz

In 2015, macOS Security Expert Patrick Wardle reported an almost shockingly simple method hackers could employ to get around the Mac Gatekeeper system, which is the first line of defense against malware. He simply bundled two executable files: One signed and one not signed. Apple promptly fixed this weakness when Wardle reported it, but the hackers did not stop looking for new ways to infect Mac systems.

Recently, researchers at Trend Micro discovered an app on a popular Torrent site that was promised to install a macOS program called Little Snitch, which is a firewall app. Lurking inside the package, however, was an EXE file that could deliver a hidden payload.

A spokesman at Trend had the following to say about the discovery:

'We suspect that this specific malware can be used as an evasion technique for other attack or infection attempts to bypass some built-in safeguards such as digital certification checks, since it is an unsupported binary executable in Mac systems by design. We think that the cyber-criminals are studying the development and opportunities from this malware bundled in apps and available in torrent sites, and therefore we will continue investigating how cyber-criminals can use this information and routine.'

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Normally, a Windows executable file can't and won't run on a Mac. The hackers have worked around this by bundling the EXE with a free framework called Mono. Trend's research team went onto say:

'Currently, running an EXE on other platforms may have a bigger impact on non-Windows systems such as MacOS. Normally, a Mono framework installed in the system is required to compile or load executables and libraries. In this case, however, the bundling of the files with the said framework becomes a workaround to bypass the systems given EXE is not a recognized binary executable by MacOS' security features. As for the native library differences between Windows and MacOS, Mono framework supports DLL mapping to support Windows-only dependencies to their MacOS counterparts.'

Long story short, Mac users have a new potential threat to worry about. Stay vigilant.