huy le

[huy le @bodd9538]

@fwrnr @niksthehacker may i have the slide too. really thanks

[TrendAI Zero Day Initiative @thezdi]

Miss @chudyPB's talk on .NET deserialization bugs during @hexacon_fr? You can check out his full white paper at:
https://t.co/MNNuqkZC49

And be sure to catch his exploit videos for #Exchange (https://t.co/rViksCihNf) and #SolarWinds (https://t.co/8Ituruzlaw)

[LetsDefend @LetsDefendIO]

30 Cybersecurity search engines

[LetsDefend @LetsDefendIO]

How HTTPS works?

[Alex Xu @alexxubyte]

URL, URI, URN - What are the differences?

The diagram below shows a comparison of URL, URI, and URN.

🔹 URI
URI stands for Uniform Resource Identifier. It identifies a logical or physical resource on the web. URL and URN are subtypes of URI. URL locates a resource, while URN names a resource.

A URI is composed of the following parts:
scheme:[//authority]path[?query][#fragment]

🔹 URL
URL stands for Uniform Resource Locator, the key concept of HTTP. It is the address of a unique resource on the web. It can be used with other protocols like FTP and JDBC.

🔹 URN
URN stands for Uniform Resource Name. It uses the urn scheme. URNs cannot be used to locate a resource. A simple example given in the diagram is composed of a namespace and a namespace-specific string.

If you would like to learn more detail on the subject, I would recommend W3C’s clarification.

–
Subscribe to our weekly newsletter to get a Free System Design PDF (158 pages): https://t.co/4QcX8btXGL

[Alex Xu @alexxubyte]

Twitter 1.0 Tech Stack

Mobile: Swift, Kotlin, PWA
Web: JS, React, Redux
Services: Mesos, Finagle
Caching: Pelikan Cache, Redis
Databases: Manhattan, MySQL, PostgreSQL
...

Based on Twitter engineering blogs.

@elonmusk when will Twitter 2.0 tech stack be available?

[Bytebytego @bytebytego]

Live streaming explained

How do video live streamings work on YouTube, TikTok live, or Twitch? The technique is called live streaming.

Livestreaming differs from regular streaming because the video content is sent via the internet in real-time, usually with a latency of just a few seconds.

The diagram below explains what happens behind the scenes to make this possible.

Step 1: The raw video data is captured by a microphone and camera. The data is sent to the server side.

Step 2: The video data is compressed and encoded. For example, the compressing algorithm separates the background and other video elements. After compression, the video is encoded to standards such as H.264. The size of the video data is much smaller after this step.

Step 3: The encoded data is divided into smaller segments, usually seconds in length, so it takes much less time to download or stream.

Step 4: The segmented data is sent to the streaming server. The streaming server needs to support different devices and network conditions. This is called ‘Adaptive Bitrate Streaming.’ This means we need to produce multiple files at different bitrates in steps 2 and 3.

Step 5: The live streaming data is pushed to edge servers supported by CDN (Content Delivery Network.) Millions of viewers can watch the video from an edge server nearby. CDN significantly lowers data transmission latency. 

Step 6: The viewers’ devices decode and decompress the video data and play the video in a video player.

Steps 7 and 8: If the video needs to be stored for replay, the encoded data is sent to a storage server, and viewers can request a replay from it later.

–
Subscribe to our weekly newsletter to get a Free System Design PDF (158 pages): https://t.co/RibM5u7UxP

[N$🌟 @__nav1n_]

My new favorite SQLi finding methodology returning some great results...

SQL Injection in `X-Forwarded-For:` header.

#BugBounty

[Hacking Articles @hackinarticles]

Open Source SIEM Tools

#infosec #cybersecurity #cybersecuritytips #pentesting #redteam #informationsecurity #CyberSec #networking #networksecurity #infosecurity #cyberattacks #security #linux #cybersecurityawareness #bugbounty #bugbountytips

[TryHackMe @tryhackme]

NEW FREE ROOM: Learn to create, build and deploy Docker containers!

🧠 Learn how to manage containers
⬆️ Create and level up your first Dockerfile
🔧 Build your first service
��� Deploy your first container

https://t.co/3cW2bOixBV

[Hacking Articles @hackinarticles]

Windows useful Directories

#infosec #cybersecurity #cybersecuritytips #pentesting #redteam #informationsecurity #CyberSec #networking #networksecurity #infosecurity #cyberattacks #security #linux #cybersecurityawareness #bugbounty #bugbountytips

[YD1RUH @octacons]

IPsec tunneling over LORA. 😂 Even I successfully Proof the concept, I still cannot believe what I've done. Hope this PoC will be game changer in Industrial system that using LORA as the system censore or control.
#Linux #lorawan #lora #openmodem #networking #IPsec #cybersecurity

[Hacking Articles @hackinarticles]

Firewall Testing Checklist

https://t.co/DWJP9UU92Y

#infosec #cybersecurity #cybersecuritytips #pentesting #redteam #informationsecurity #CyberSec #networking #networksecurity #infosecurity #cyberattacks #security #linux #cybersecurityawareness #bugbounty #bugbountytips

[Hacking Articles @hackinarticles]

Top 10 OSINT Tools

Credit @Hacker_Combat

#infosec #cybersecurity #cybersecuritytips #pentesting #redteam #informationsecurity #CyberSec #networking #networksecurity #infosecurity #cyberattacks #security #linux #cybersecurityawareness #bugbounty #bugbountytips