<![CDATA[iamsywid]]>https://blog.sywid.devRSS for NodeFri, 15 May 2026 10:32:46 GMT60<![CDATA[TIL: LLM Jailbreak]]>https://blog.sywid.dev/til-llm-jailbreakhttps://blog.sywid.dev/til-llm-jailbreakMon, 24 Jun 2024 16:41:54 GMTJailbreak in the context of LLM is manipulating the prompt to bypass restrictions set by the service provider.

The 4 common prohibited scenarios (Deng et al., 2024):

  1. Illegal usage against law

  2. Generation of harmful or abusive contents

  3. Violation of rights and privacy

  4. Generation of adult contents

Reference

Deng, G., Liu, Y., Li, Y., Wang, K., Zhang, Y., Li, Z., Wang, H., Zhang, T., & Liu, Y. (2024). MasterKey: Automated Jailbreak Across Multiple Large Language Model Chatbots. Proceedings 2024 Network and Distributed System Security Symposium. https://doi.org/10.14722/ndss.2024.24188

]]><![CDATA[TIL: Google Cloud Storage and Serverless Options]]>https://blog.sywid.dev/til-google-cloud-storage-and-serverless-optionshttps://blog.sywid.dev/til-google-cloud-storage-and-serverless-optionsMon, 18 Dec 2023 16:00:10 GMT5 Core Storage Options

  1. Cloud Storage

    • Object Storage

    • Object (e.g. video, pictures, audio recordings) + Metadata

  2. Cloud SQL

    • Fully managed relational databases

    • MySQL, PostgreSQL, SQL Server

  3. Cloud Spanner

    • Scales horizontally

    • SQL support for online transaction (OLTP) system

  4. Cloud Bigtable

    • NoSQL

    • Does not support SQL queries

  5. Firestore

    • NoSQL

    • Free quota per day

4 Serverless Options

  1. App Engine

    • host frontend, backend, or both

  2. Cloud Functions

    • event-driven code

  3. Cloud Run

    • containerized apps

  4. Cloud Run for Anthos

    • hybrid/multi-cloud apps
]]><![CDATA[TIL: How to remove X-Powered-By: ASP.NET Header]]> IIS Right click on the Server Select Internet Information Services (IIS) Manager On Features View tab, go to IIS -> HTTP Response Headers Right click on X-Powered-By -> Remove Click Yes to confirm. Reload ...]]>https://blog.sywid.dev/til-how-to-remove-x-powered-by-aspnet-headerhttps://blog.sywid.dev/til-how-to-remove-x-powered-by-aspnet-headerTue, 28 Nov 2023 16:00:10 GMT

  • Go to Server Manager -> IIS

    • Right click on the Server

    • Select Internet Information Services (IIS) Manager

    1. On Features View tab, go to IIS -> HTTP Response Headers

    2. Right click on X-Powered-By -> Remove

    3. Click Yes to confirm.

    4. Reload the page and inspect the response. The X-Powered-By: ASP.NET Header should be removed

      .

    ]]>    <![CDATA[TIL: How to remove IIS server response header]]> IIS Right click on the Server Select Internet Information Services (IIS) Manager On Features View tab, go to Management -> Configuration Editor On the drop down menu, select the section: system.webServer -> security...]]>https://blog.sywid.dev/til-how-to-remove-iis-server-response-headerhttps://blog.sywid.dev/til-how-to-remove-iis-server-response-headerMon, 27 Nov 2023 16:00:10 GMT

  • Go to Server Manager -> IIS

    • Right click on the Server

    • Select Internet Information Services (IIS) Manager

  • On Features View tab, go to Management -> Configuration Editor

  • On the drop down menu, select the section: system.webServer -> security -> authentication -> requestFiltering

  • Set the value for removeServerHeader to True

  • Reload the page and inspect the response. The IIS header should be removed.

    • ]]>    <![CDATA[Google Preemptible Virtual Machine Instances]]>https://blog.sywid.dev/google-preemptible-virtual-machine-instanceshttps://blog.sywid.dev/google-preemptible-virtual-machine-instancesMon, 20 Nov 2023 16:00:12 GMTTo preempt means to stop. Preemptible virtual machines are available at a lower price but might be preempted (stopped) at any time. This instance always stops after running for 24 hours (except for Spot VMs that do not have maximum runtime unless defined.)

    Notes:

    • Data is not persisted locally. No Local SSD data is retained.
    • Persistent disks can be attached to the VM but will incur storage costs.
    • Not covered by SLA.
    • Not charged while in Terminated state.
    • Example use case: Batch processing jobs

    References:

    1. Preemptible VM instances

    2. About Local SSD disks

    3. Preemptible VMs Best Practices

    ]]>    <![CDATA[TIL: How to change default IIS web server web page]]>https://blog.sywid.dev/til-how-to-change-default-iis-web-server-web-pagehttps://blog.sywid.dev/til-how-to-change-default-iis-web-server-web-pageMon, 13 Nov 2023 16:00:12 GMTTLDR: Create index.html and save in C:\inetpub\wwwroot

    1. Create an index.html file. This will be the new default page.

    2. Save in the directory C:\\inetpub\\wwwroot

    3. Check the web page displayed on localhost

    ]]>    <![CDATA[TIL: How to install IIS web server on Windows Server 2019?]]>https://blog.sywid.dev/til-how-to-install-iis-web-server-on-windows-server-2019https://blog.sywid.dev/til-how-to-install-iis-web-server-on-windows-server-2019Thu, 09 Nov 2023 16:00:10 GMT

  • Run PowerShell as administrator and install IIS services

     import-module servermanager
 add-windowsfeature web-server -includeallsubfeature

  • Default IIS web server web page on localhost.

    • Version Notes:

    • Windows Server 2019
    • Microsoft IIS/10.0
    • PowerShell 5.1

    Display PowerShell version using $PSVersionTable

    ]]>    <![CDATA[Google Cloud Project]]>https://blog.sywid.dev/google-cloud-projecthttps://blog.sywid.dev/google-cloud-projectWed, 08 Nov 2023 16:00:09 GMT1. A Tour of Google Cloud Hands-on Labs introduces the Google Cloud console. There's also a walkthrough on how to enable an API (e.g. Dialogflow).

    • Google Cloud Project refers to the entity that contains the cloud resources and services (e.g. pool of virtual machines, databases, network, settings and permissions)

    • Basic Roles/Primitive Roles (Viewer, Editor, Owner) are highly permissive and are not recommended in production environments. Instead, use predefined roles or custom roles.

    • The core principle of REST architecture style is to "define named resources that can be manipulated using a small number of methods."

    ]]>    <![CDATA[Installing Logisim on macOS]]>https://blog.sywid.dev/installing-logisim-on-macoshttps://blog.sywid.dev/installing-logisim-on-macosSun, 16 Apr 2023 12:45:39 GMTDownload Logisim from SourceForge.

    Check the hash: sha256sum logisim-generic-2.7.1.jar

    • Initially, I downloaded logisim-macosx-2.7.1.tar.gz but I encountered errors due to the required java version. What worked for me is to directly run the jar file: java -jar logisim-generic-2.7.1.jar

    • tar.gz also includes a .jar file. Show package contents to access:

    • Logism.app package contents:

    Errors Encountered:

    • When I tried to open Logism.app, it required the Java SE6 Runtime.

      More Info... leads to Download Java for OS X 2017-001

      However, I already have a newer java version installed.

      Java for macOS 2017-001 can't be installed on this disk. A newer version of this package is already installed.

      This is when I considered using sdkman to see if I can download Java SE6 but since the version is deprecated, it is not immediately available on the list.

    • When I double-click the jar file, the following warning is displayed:

    "logism.jar" cannot be opened because it is from an unidentified developer.

    To resolve this, go to System Preferences -> Security & Privacy.

    ]]>    <![CDATA[TIL: How to generate checksum?]]>https://blog.sywid.dev/til-how-to-generate-checksumhttps://blog.sywid.dev/til-how-to-generate-checksumSat, 15 Apr 2023 12:45:39 GMTChecksums work like a fingerprint. It is used to verify file integrity. If the files have the same checksums, then they are identical. It can also be used to check if the file has been previously scanned as malicious.

    On Windows:

    1. certutil:

       certutil -hashfile <filepath> SHA256

    2. Get-FileHash

       Get-FileHash <filepath> -Algorithm SHA256

    On Linux/macOS:

    1. sha256sum

       sha256sum <filepath>

    2. shasum

       shasum -a 256 <filepath>

    The file hash can also be checked on VirusTotal and InQuest

    f29bc64a9d3732b4b9035125fdb3285f5b6455778edca72414671e0ca3b2e0de

    ]]>    <![CDATA[TIL: ctrl + space: Eclipse Content Assist on macOS]]> Keyboard -> Shortcuts -> Input Sources Deselect the check box labeled...]]>https://blog.sywid.dev/til-ctrl-space-eclipse-content-assist-on-macoshttps://blog.sywid.dev/til-ctrl-space-eclipse-content-assist-on-macosSun, 29 Jan 2023 15:00:39 GMTWhen I tried to use ctrl + space, it brings out the Input Sources while cmd + space brings out Spotlight. How to use this shortcut for content assist?

    Go to System Preferences -> Keyboard -> Shortcuts -> Input Sources

    • Deselect the check box labeled: `Select the previous input source.` It is also using the ctrl+space key combination.

    Go back to Eclipse, and try content assist again.

    main

    syso

    System.out.println();

    for

    ]]>    <![CDATA[TIL: 3 general approaches language models use]]>https://blog.sywid.dev/til-3-general-approaches-language-models-usehttps://blog.sywid.dev/til-3-general-approaches-language-models-useTue, 24 Jan 2023 15:00:42 GMTHow one word relates to another and in which context it can be used. If this can be calculated precisely, then would that be the same as knowing exactly what to say and when?

    How can a sequence of words be generated?

    The 3 general approaches language models use according to the report (Eovito & Danilevsky, 2021, p.8) are:

    1. Linguistic - by following a set of rules (grammatical structure)

    2. Probabilistic/statistical - by calculating the probability of words occurring together

    3. Embeddings - by representing words as vectors in a large dimensional space

    I like learning languages. And it would be interesting to read more about how machines "learn" languages.

    Reference

    Eovito, A., Danilevsky, M. (2021). Language Models in Plain English: Humans Understanding How Machines Understand Language. O’Reilly Media Inc. https://learning.oreilly.com/library/view/language-models-in/9781098109073/

    ]]>    <![CDATA[Ignoring files in Git]]>https://blog.sywid.dev/ignoring-files-in-githttps://blog.sywid.dev/ignoring-files-in-gitWed, 05 Oct 2022 14:30:42 GMTtl;dr: We can tell git to ignore files using .gitignore and exclude.

    • In the home directory, we can set the global .gitignore
    • From within the project repository, there's the project .gitignore andpersonal exclude file (found within the local .git folder).
    • Rules in the subdirectories override the rules in the parent directories.

    On .gitignore and exclude files

    1. core.excludesfile

      • Global .gitignore
      • Ignore files across all git repositories of the current user in the system.
      • Example: Files related to the OS and code editor

      • Configure using --global option

        • Below it's named .gitignore but it can be any file name (e.g. .gitignore_global).

        • By convention, this is saved in the same location as the global gitconfig (in the home directory) but it can be in another location.

            nano ~/.gitignore

        • Specify the path to the .gitignore file

            git config --global core.excludesfile ~/.gitignore
        • Additional patterns can be appended using:
            echo .DS_Store >> ~/.gitignore
        • ⏩ Set global .gitignore
        • It's also possible to set values using --system and the --local options

    2. .gitignore

      • Project .gitignore
      • Ignore files common across all copies of the current project repository.
      • Example: File patterns related to the project and the programming language
        • Node.gitignore
        • config.json (because this contains the token)
            echo config.json >> .gitconfig
          image.png
      • Version-controlled, committed and shared with anyone who clones the repository.
      • There can be multiple .gitignore in a repository but the convention is to place one in the top level directory. Same level as the local .git folder
    3. .git/info/exclude
      • Personal exclude
      • Ignore files within the current copy of the project repository.
      • Example: File patterns related to personal workflow and development tools
        • Personal commit.template saved in .gitmessage.txt
          echo .gitmessage.txt >> .git/info/exclude
      • exclude is a file located in the local .git folder. This file is not committed to the repository. image.png
      • ⏩ Display .git folder on Visual Studio Code

    More .gitignore templates

    ]]>