NISRA
  • NEW!
    NEW!  Connect Ideas Across Notes
    Save time and share insights. With Paragraph Citation, you can quote others’ work with source info built in. If someone cites your note, you’ll see a card showing where it’s used—bringing notes closer together.
    Got it
        • Sharing URL Link copied
        • /edit
        • View mode
          • Edit mode
          • View mode
          • Book mode
          • Slide mode
          Edit mode View mode Book mode Slide mode
        • Customize slides
        • Note Permission
        • Read
          • Owners
          • Signed-in users
          • Everyone
          Owners Signed-in users Everyone
        • Write
          • Owners
          • Signed-in users
          • Everyone
          Owners Signed-in users Everyone
        • Engagement control Commenting, Suggest edit, Emoji Reply
      • Invite by email
        Invitee

        This note has no invitees

      • Publish Note

        Share your work with the world Congratulations! 🎉 Your note is out in the world Publish Note No publishing access yet

        Your note will be visible on your profile and discoverable by anyone.
        Your note is now live.
        This note is visible on your profile and discoverable online.
        Everyone on the web can find and read all notes of this public team.

        Your account was recently created. Publishing will be available soon, allowing you to share notes on your public page and in search results.

        Your team account was recently created. Publishing will be available soon, allowing you to share notes on your public page and in search results.

        Explore these features while you wait
        Complete general settings
        Bookmark and like published notes
        Write a few more notes
        Complete general settings
        Write a few more notes
        See published notes
        Unpublish note
        Please check the box to agree to the Community Guidelines.
        View profile
      • Commenting
        Permission
        Disabled Forbidden Owners Signed-in users Everyone
      • Enable
      • Permission
        • Forbidden
        • Owners
        • Signed-in users
        • Everyone
      • Suggest edit
        Permission
        Disabled Forbidden Owners Signed-in users Everyone
      • Enable
      • Permission
        • Forbidden
        • Owners
        • Signed-in users
      • Emoji Reply
      • Enable
      • Versions and GitHub Sync
      • Note settings
      • Note Insights New
      • Engagement control
      • Make a copy
      • Transfer ownership
      • Delete this note
      • Insert from template
      • Import from
        • Dropbox
        • Google Drive
        • Gist
        • Clipboard
      • Export to
        • Dropbox
        • Google Drive
        • Gist
      • Download
        • Markdown
        • HTML
        • Raw HTML
    Menu Note settings Note Insights Versions and GitHub Sync Sharing URL Help
    Menu
    Options
    Engagement control Make a copy Transfer ownership Delete this note
    Import from
    Dropbox Google Drive Gist Clipboard
    Export to
    Dropbox Google Drive Gist
    Download
    Markdown HTML Raw HTML
    Back
    Sharing URL Link copied
    /edit
    View mode
    • Edit mode
    • View mode
    • Book mode
    • Slide mode
    Edit mode View mode Book mode Slide mode
    Customize slides
    Note Permission
    Read
    Owners
    • Owners
    • Signed-in users
    • Everyone
    Owners Signed-in users Everyone
    Write
    Owners
    • Owners
    • Signed-in users
    • Everyone
    Owners Signed-in users Everyone
    Engagement control Commenting, Suggest edit, Emoji Reply
  • Invite by email
    Invitee

    This note has no invitees

  • Publish Note

    Share your work with the world Congratulations! 🎉 Your note is out in the world Publish Note No publishing access yet

    Your note will be visible on your profile and discoverable by anyone.
    Your note is now live.
    This note is visible on your profile and discoverable online.
    Everyone on the web can find and read all notes of this public team.

    Your account was recently created. Publishing will be available soon, allowing you to share notes on your public page and in search results.

    Your team account was recently created. Publishing will be available soon, allowing you to share notes on your public page and in search results.

    Explore these features while you wait
    Complete general settings
    Bookmark and like published notes
    Write a few more notes
    Complete general settings
    Write a few more notes
    See published notes
    Unpublish note
    Please check the box to agree to the Community Guidelines.
    View profile
    Engagement control
    Commenting
    Permission
    Disabled Forbidden Owners Signed-in users Everyone
    Enable
    Permission
    • Forbidden
    • Owners
    • Signed-in users
    • Everyone
    Suggest edit
    Permission
    Disabled Forbidden Owners Signed-in users Everyone
    Enable
    Permission
    • Forbidden
    • Owners
    • Signed-in users
    Emoji Reply
    Enable
    Import from Dropbox Google Drive Gist Clipboard
       Owned this note    Owned this note      
    Published Linked with GitHub
    • Any changes
      Be notified of any changes
    • Mention me
      Be notified of mention me
    • Unsubscribe
    資訊自由與安全:資安人的見解 by Loyo === :::danger 請愛惜共筆,勿進行惡意刪減 ::: --- - 資訊自由是什麼 - 資訊安全扮演的角色 - 淺談HTTP、DNS保護 - 資安小故事 - 結論 --- ## 資訊自由是什麼 - 自由存取、自主決策 - 代價和責任、安全和保護 ### 財富自由 vs 資訊自由 - 自由存取 - 財富自由 : 能夠自由地使用、管理和投資自己的金錢, - 資訊自由 : 能夠自由的存取、使用和分享資訊,不受不合理的審查或限制 - 自主存取 - 財富自由: - 資訊自由:有權存取完整的資訊時,可以在生活中做出更好的選擇 - 責任和代價 - 財富自由:需要財務規劃、投資 - 資訊自由:需要資訊素養、批判性思考和辨別真偽能力,確保資訊的有效利用 - 安全和保護 - 財富自由: - 資訊自由:保護自己的資料和確保存取資訊的安全 :::warning 網路中立原則存在或廢除? ::: ## 資訊安全扮演的角色 ### 資訊安全可以幫助我們什麼? - 自由存取 - 自主決策 - 代價和責任 - 安全和保護 ### 資訊安全 CIA 三角模型 (CIA Triad) - 機密性 (Confidentiality) - 完整性 (Integrity) - 可用性 (Availability) ![The CIA Triad](https://hackmd.io/_uploads/Byatj3Y6h.jpg =200x) #### 機密性 確保資料傳遞與儲存的隱密性避免未經授權的使用者有意或無意地揭露資料內容 #### 完整性 確保資料無論在傳輸或儲存的生命週期中,保有其正確性與一致性 #### 可用性 使用者進行操作時,資料與服務須保持可用狀況(能用),並能滿足使用需求(夠用) - 自由存取 = 可用性 + 完整性 - 自主決策 = 完整性 - 代價和責任 = 可用性 + 完整性 - 安全和保護 = 機密性 ### 資訊是怎麼獲得的 - 各種社群軟體、口耳相傳... 該怎麼判斷真假 聊聊關於 Metadata 這件事 #### Metadata 中繼資料、元數據、詮釋資料、後設資料 - 「描述資料的資料」 ## 淺談 HTTP、DNS 保護 - 網頁、網址本身就是一種 ==Metadata== - 選擇**可靠**的==Metadata==可以更快速的對資訊做出初步判斷! - 何為**可靠**?如何訂? - 參考CIA:**機密性**、**完整性**、**可靠性** ![URL](https://hackmd.io/_uploads/SJTEIaKT3.jpg) ### HTTP **H**yper **T**ext **T**ransder **P**rotocol - 用途:通常瀏覽器使用,常用於顯示網頁內容 - 風險:正在瀏覽的內容有可能被隔壁同學知道 - 出現 HTTPS - 透過**憑證**與**加密**來解決此困擾 #### HTTPS一定安全嗎? HTTPS 加密傳輸 **憑證有效性**:是否為有效第三方簽證(身分證是否是真的?) Your connection is not private #### 有效的第三方憑證:PKI架構 ```mermaid graph CA[Certificate Authority] --> RC[Root Certificate] --> IC[Intermediate Certificate] --> Re[SSL Certificate, Server, Private key] ``` - 公開且公正的第三方機構 - 核對申請者的身分 - 嚴謹的信任架構 - 可信任、可驗證、可加密 #### HTTPS - 透過HTTPS完整的機制,可以做為判斷資訊的**一種參考** - 雖然無法說明網頁內容,但正常的服務/資訊提供者,都會擁有合法的憑證設定 ### DNS **D**omain **N**ame **S**ystem Domain → IP - 用途:用於網域與 IP 位置的對應服務 - 風險:可能被惡意偽造回應,拿到錯誤的IP結果 - 出現DNSSEC,用於確保IP結果正確 > TRANSACTION ID 類似驗證碼 [簽章結果][PORT NUM][TRANSACT ID] 能知道網域名稱是誰的嗎?(WHOIS 服務) - WHOIS服務 - 查詢網域名稱相關資訊 - 有公開網頁服務提供查詢 - 網域名稱的資訊與架構也能提供判斷資訊時的一種參考 <!--縮網址:https + 縮網址服務的憑證--> ## 資安小故事 ### 故事(1):這真是一個好密碼!:身分識別 - 是否使用過各式弱密碼?e.g. 123456, password ... - 長度和複雜度 ![](https://hackmd.io/_uploads/By5uT6F63.png) https://www.hivesystems.io/blog/are-your-passwords-in-the-green [';--have i been pwned?](https://haveibeenpwned.com/) - 使用好的密碼組合與足夠的長度 - 避免使用重複的密碼 - 二階段密碼驗證設定(2 Factor) - 使用密碼管理軟體 ### 故事(2):這個程式將取得以下資訊:授權存取 授權 - 最小權限原則 只賦予必要的權限 例如,如果您的日常帳戶不需要管理員權限,則不要為其賦予 - 定期檢查應用程式權限 常常檢查智慧型手機或電腦上的應用程式和服務的權限,確保他們只能存取他們真正需要的資訊 ### 故事(3):我們注意到你的帳號從與平常不同的地點登入:行為紀錄 檢查帳戶活動 定期檢查... 隨時更新 ### 資訊安全3A框架 Authentication 身分識別 Authorization 授權存取 Accounting 行為紀錄 ## 結論 - 資安較度看資訊自由 - CIA 的重要性,他是一個盤點的方式,可以幫助盤點與理解 - 從 HTTPS/ DNS 的說明,用不同面向去觀看網路獲得的資訊 - 三個小故事思考個人資訊的保護議題,延伸3A框架 - 資安人,用自己的方式理解與獲得的資訊跟守護自己,也成為好的網路公民

    Import from clipboard

    Paste your markdown or webpage here...

    Advanced permission required

    Your current role can only read. Ask the system administrator to acquire write and comment permission.

    This team is disabled

    Sorry, this team is disabled. You can't edit this note.

    This note is locked

    Sorry, only owner can edit this note.

    Reach the limit

    Sorry, you've reached the max length this note can be.
    Please reduce the content or divide it to more notes, thank you!

    Import from Gist

    Import from Snippet

    or

    Export to Snippet

    Are you sure?

    Do you really want to delete this note?
    All users will lose their connection.

    Create a note from template

    Create a note from template

    Oops...
    This template has been removed or transferred.
    Upgrade
    All
    • All
    • Team
    No template.

    Create a template

    Upgrade

    Delete template

    Do you really want to delete this template?
    Turn this template into a regular note and keep its content, versions, and comments.

    This page need refresh

    You have an incompatible client version.
    Refresh to update.
    New version available!
    See releases notes here
    Refresh to enjoy new features.
    Your user state has changed.
    Refresh to load new user state.

    Sign in

    Forgot password
    or
    Sign in via Google Sign in via Facebook Sign in via X(Twitter) Sign in via GitHub Sign in via Dropbox Sign in with Wallet
    Wallet ( )
    Connect another wallet

    New to HackMD? Sign up

    By signing in, you agree to our terms of service.

    Help

    • English
    • 中文
    • Français
    • Deutsch
    • 日本語
    • Español
    • Català
    • Ελληνικά
    • Português
    • italiano
    • Türkçe
    • Русский
    • Nederlands
    • hrvatski jezik
    • język polski
    • Українська
    • हिन्दी
    • svenska
    • Esperanto
    • dansk

    Documents

    Help & Tutorial

    How to use Book mode

    Slide Example

    API Docs

    Edit in VSCode

    Install browser extension

    Contacts

    Feedback

    Discord

    Send us email

    Resources

    Releases

    Pricing

    Blog

    Policy

    Terms

    Privacy

    Cheatsheet

    Syntax Example Reference
    # Header Header 基本排版
    - Unordered List
    • Unordered List
    1. Ordered List
    1. Ordered List
    - [ ] Todo List
    • Todo List
    > Blockquote
    Blockquote
    **Bold font** Bold font
    *Italics font* Italics font
    ~~Strikethrough~~ Strikethrough
    19^th^ 19th
    H~2~O H2O
    ++Inserted text++ Inserted text
    ==Marked text== Marked text
    [link text](https:// "title") Link
    ![image alt](https:// "title") Image
    `Code` Code 在筆記中貼入程式碼
    ```javascript
    var i = 0;
    ```
    var i = 0;
    :smile: :smile: Emoji list
    {%youtube youtube_id %} Externals
    $L^aT_eX$ LaTeX
    :::info
    This is a alert area.
    :::

    This is a alert area.

    Versions and GitHub Sync
    Get Full History Access

    • Edit version name
    • Delete

    revision author avatar     named on  

    More Less

    Note content is identical to the latest version.
    Compare
      Choose a version
      No search result
      Version not found
    Sign in to link this note to GitHub
    Learn more
    This note is not linked with GitHub
     

    Feedback

    Submission failed, please try again

    Thanks for your support.

    On a scale of 0-10, how likely is it that you would recommend HackMD to your friends, family or business associates?

    Please give us some advice and help us improve HackMD.

     

    Thanks for your feedback

    Remove version name

    Do you want to remove this version name and description?

    Transfer ownership

    Transfer to
      Warning: is a public team. If you transfer note to this team, everyone on the web can find and read this note.

        Link with GitHub

        Please authorize HackMD on GitHub
        • Please sign in to GitHub and install the HackMD app on your GitHub repo.
        • HackMD links with GitHub through a GitHub App. You can choose which repo to install our App.
        Learn more  Sign in to GitHub

        Push the note to GitHub Push to GitHub Pull a file from GitHub

          Authorize again
         

        Choose which file to push to

        Select repo
        Refresh Authorize more repos
        Select branch
        Select file
        Select branch
        Choose version(s) to push
        • Save a new version and push
        • Choose from existing versions
        Include title and tags
        Available push count

        Pull from GitHub

         
        File from GitHub
        File from HackMD

        GitHub Link Settings

        File linked

        Linked by
        File path
        Last synced branch
        Available push count

        Danger Zone

        Unlink
        You will no longer receive notification when GitHub file changes after unlink.

        Syncing

        Push failed

        Push successfully