#contentprovider

[ausetkmt]

Tom's Guide: New Android security flaw lets hackers seize control of apps — uninstall these immediately

New Android security flaw lets hackers seize control of apps — uninstall these immediately

Billions of Android devices open to 'Dirty Stream' malware

Another day, another new Android malware strain. Microsoft is sounding the alarm about a recently discovered critical security vulnerability on Android named "Dirty Stream" that can let malicious apps easily hijack legitimate apps. Worse still, this flaw impacts multiple apps with hundreds of millions of installs. If you have one of the best Android phones, here's what you need to know to protect your data. 

The vulnerability relates to the ContentProvider system prevalent across many popular Android apps, which manages access to structured data sets meant to be shared between different applications. It's basically what lets your Android apps talk to one another and share files. To protect users and ward off unauthorized access, the system includes safeguards such as strict isolation of data, unique permissions attached to specific URIs (Uniform Resource Identifiers), and path validation security. 

What makes the Dirty Stream vulnerability so devious is how it manipulates this system. Microsoft has found that hackers can create "custom intents," messaging objects that facilitate communication between components across Android apps, to bypass these security measures. By exploiting this loophole, malicious apps can send a file with a manipulated filename or path to another app using a custom intent, sneaking in harmful code disguised as legitimate files. 

[wolvesodin]

com.gold.android.youtube Crash Report

USER_COMMENT=null

ANDROID_VERSION=12

APP_VERSION_NAME=18.02.34

BRAND=Redmi

PHONE_MODEL=220333QNY

CUSTOM_DATA=

STACK_TRACE=java.lang.SecurityException: Failed to find provider com.gogoogle.android.gsf.gservices for user 0; expected to find a valid ContentProvider for this authority

at android.os.Parcel.createExceptionOrNull(Parcel.java:2426)

at android.os.Parcel.createException(Parcel.java:2410)

at android.os.Parcel.readException(Parcel.java:2393)

at android.os.Parcel.readException(Parcel.java:2335)

at android.content.IContentService$Stub$Proxy.registerContentObserver(IContentService.java:1336)

at android.content.ContentResolver.registerContentObserver(ContentResolver.java:2675)

at android.content.ContentResolver.registerContentObserver(ContentResolver.java:2663)

at ogi.j(Unknown Source:34)

at ogi.e(Unknown Source:3)

at whj.f(Unknown Source:14)

at fet.run(Unknown Source:689)

at uix.run(Unknown Source:21)

at afrw.run(Unknown Source:12)

at ovq.run(Unknown Source:49)

at ouy.run(Unknown Source:428)

at java.lang.Thread.run(Thread.java:1012)

at ovv.run(Unknown Source:47)

[digimark209]

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Tags

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[kaobei-engineer]

#純靠北工程師6s5

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今天進會議室之前，我還以為技術選型出了什麼問題，所以 call 個 API 就卡了一個月。 結果竟然是兩三個職業工程師，裡面還有 10 年經驗的，看不懂 Android ContentProvider 這樣的技術文件。 白板上面的討論，還畫了莫名其妙的架構圖，各種明顯連要解決什麼問題、都沒搞懂的實驗計畫。 可是老闆又是重感情，鼓勵員工多努力的人，我能怎麼辦呢？再請個繪本、圖文作家團隊，一起加入這個讀書會，把白板重畫一遍嗎。

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💖 純靠北工程師 官方 Discord 歡迎在這找到你的同溫層！

👉 https://discord.gg/tPhnrs2

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💖 全平台留言、文章詳細內容

👉 https://init.engineer/cards/show/8789

[wamatechblog]

Basics of Android App Development

Describe Android. The Android mobile operating system was created by a number of companies, primarily Google and the Open Handset Alliance. The operating system is written in a number of languages, including Java (UI), C (Core), and C++. The first commercial Android device was introduced in September 2008 after its announcement in November 2007.

The Linux Kernel has been updated to create Android OS, which is a member of the Unix-like OS family. It is primarily made for touchscreen mobile devices like smartphones and tablets. Since 2011, Android has sold the most smartphones worldwide, and since 2013, Android has sold the most tablets. Over 5 billion people utilise the operating system each month as of right now.

When developers or app development aficionados completely understand the underlying principles of app development, creating Android apps becomes simple. The fundamentals include the elements of app creation, the necessary language skills, the optimum app layout, and the whole lifecycle of an Android application.

To help people navigate the rapidly expanding globe, Wama Technology offers a variety of courses. They also have fair prices for the courses. One of India’s top businesses, Wama Technology provides the top computer programming courses to help you find employment in 2022.

They even offer some free coding training to the less fortunate. Through skill-based education, Wama Technology aims to close the knowledge gap between the learned and the uneducated.

There is a team of knowledgeable trainers at Wama Technology. Due to the close organisational project, all of the instructors give their all to teaching the students in a more straightforward manner and emphasising real-world tasks. There is a software lab with all the necessary tools where students can complete any practicals.

Android Programming Languages: Basics of Essential Android App Development

Java or C++ and XML are the two languages used to programme Android (Extension Markup Language). KOTLIN is also preferred today. As a front-end, the XML file handles design, presentation, layouts, blueprints, etc., whereas the JAVA or KOTLIN file handles button functionality, variables, storage, etc (as a back-end).

Components for Android

The foundation of Android are the App Components. Each component has a certain function and life cycle, or the period from the start of an app to its conclusion. Some of these elements also rely on other elements. Each element serves a distinct function.

The four main parts of the app are:

1. Exercises

2. Providers

3. Receivers for broadcasts:

4. A content creator

The UI and user interactions on the screen are covered. In other words, it is an activity-containing User Interface. Depending on the app, there may be one or more of these. When the application is opened, it begins. There is always at least one action. The following steps are taken to carry out the activity.

Radio and TV receivers

A broadcast replies to messages sent by the system or by other programmes. For instance, when the phone’s battery is low, the Android operating system broadcasts a message to start the Battery Saver function or app. When the programme receives the message, it does the necessary action.

Each object is represented by an intent object in the Broadcast Receiver subclass of the BroadcastReceiver class.

Content Creator

When another application requests it, a content provider is utilised to send data from one application to the others. These are handled by the ContentResolver class. The APIs (application programming interfaces) that this class implements allow other programmes to carry out transactions. The Parent Class of the ContentProvider class must be implemented by all Content Providers.

Services are the tasks the software completes in the background. These may be ongoing processes, such as a user listening to music while browsing the internet. A service may require additional sub-services to carry out particular functions. The main goal of the Services is to keep the app running continuously without interfering with any user interactions.

Layout Structure of Android Studio Android Studio’s default hierarchical Layout depicts the various app structures. It includes the authorization that an application would require to carry out a particular task. The root of the project source set is the XML file known as Android Manifest. The key details regarding the app, the Android development tools, the Android operating system, and Google Play are covered.

The Hardware and Software aspects of a mobile app are also included in the development process because they affect the app’s compliance with the Play Store. It also covers unique activities such as packages, services, broadcast receivers, and content suppliers.

Jar Files

The Java files needed to run the app’s background task can be found in the JAVA subdirectory. It has programming functions, computation, storage, variables, toast (a brief pop-up message), and button functionality. The quantity of these files varies according to the nature of the generated actions.

Material Folder

The many resources that are used in the programme are contained in the res or Resource folder. Subfolders in this include drawable, Layout, mipmap, raw, and values. The drawable is made from of pictures. The XML files that provide the user interface layout make up the Layout.

These are kept in res. Layout and accessed using the class name R.layout. Resources files like audio or music files make up the raw. These can be reached using R.raw.filename. Hardcoded strings (which are thought to be safe to store string values), integers, and colours are all stored in values.

Also read : Mobile App Development Company

[mostlikely2suckseed]

[mastercoursecreator]

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[digimark209]

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Tags

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[screenteasers]

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[beyondwordswrite]

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[jacob-cs]

android 중급 28강 Provider tacademy

original source : https://youtu.be/bc6wW-g6uss

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content provider에서 data set이란 database의 table이라고 생각할수 있다.

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content provider에서 data를 가져올때 cursor에 넣어서 되돌린다. 즉 cursor를 통해 data에 접근하게 된다. 

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Contract class는 아래와 같이 만들수 있다. authority, data set이름, uri, 칼럼이름, type 이름등을 지정해서 여러곳에 햇갈리지 않고 일관되게 사용할수 있게 한다. 

content provider의 data에 접근하기위해 <uses-permission> 를 이용해서 permission을 얻을수 있다. content provider는 다른 app이 어떤 permission을 얻어야 하는지 지정해주어야 한다. 경우에 따라 다른 app에게 임시 permission은 허용하기 위해서는 content provider에 android:grantUriPermissions를 설정하거나 하위에 <grant-uri-permission>설정한다. 임시 permission 이 필요한 app의 경우 호출 intent에 위와 같이 Flag를 지정해 준다. 

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참고자료) UriMatcher 실제 사용 예시 https://youtu.be/6ZbAsvifQq8

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authority, data set이름, uri, 칼럼이름, type 이름등을 지정해서 여러곳에 햇갈리지 않고 일관되게 사용할수 있게 한다. 

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[mostlikely2suckseed]

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[mastercoursecreator]

There is no use in creating an online course if you do not have an audience that is interested in buying what you sell. So after understanding the topic you want to talk about, try to understand if you will have an audience to sell the course to. One recommendation that we can give you is that before you start recording your classes, create a YouTube channel to post some videos on the topic you want to address. Over time, you will be able to perceive if people are looking for and seeing what you share. For more details, contact us...

[lenyecommerce-blog]

#motivationquote #longtermvalue #contentprovider #clientsmatters #clientfocus #truevalue #ecommerce #webmarketing #igetit #inspiration (à Hong Kong) https://www.instagram.com/p/B2yQP_FDFAp/?igshid=xk0oj0nwvc0d