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@k-kagurazaka
k-kagurazaka / DebounceTest.kt
Created December 1, 2017 14:18
RxJava debounce like operator implementation for kotlin coroutine
launch(UI) {
editText.onTextChanged()
.debounce(1, TimeUnit.SECONDS)
.consumeEach {
Log.d("DebounceTest", "value: $it")
}
}
}
fun EditText.onTextChanged(): ReceiveChannel<String> =

WannaCry|WannaDecrypt0r NSA-Cyberweapon-Powered Ransomware Worm

  • Virus Name: WannaCrypt, WannaCry, WanaCrypt0r, WCrypt, WCRY
  • Vector: All Windows versions before Windows 10 are vulnerable if not patched for MS-17-010. It uses EternalBlue MS17-010 to propagate.
  • Ransom: between $300 to $600. There is code to 'rm' (delete) files in the virus. Seems to reset if the virus crashes.
  • Backdooring: The worm loops through every RDP session on a system to run the ransomware as that user. It also installs the DOUBLEPULSAR backdoor. It corrupts shadow volumes to make recovery harder. (source: malwarebytes)
  • Kill switch: If the website www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com is up the virus exits instead of infecting the host. (source: malwarebytes). This domain has been sinkholed, stopping the spread of the worm. Will not work if proxied (source).

update: A minor variant of the viru

title date tags
GCMForMojo 的部署与设置
2017-01-21 11:07:03 -0800
GCM
Android

2017年2月6日更新:完善部分内容,更新内容

2017年2月8日更新:发现自己脑抽少写了一步较为关键的步骤,赶紧补上orz,连带解决笔误

@akosma
akosma / rsa.c
Last active December 14, 2022 02:37
RSA algorithm in C using the GMP library
/*
CmakeLists.txt:
cmake_minimum_required(VERSION 3.6)
project(rsa)
set(CMAKE_C_STANDARD 11)
set(SOURCE_FILES main.c)
add_executable(rsa ${SOURCE_FILES})
target_link_libraries(rsa gmp)
*/
@IgnoredAmbience
IgnoredAmbience / 99-noto-mono-color-emoji.conf
Last active March 27, 2024 03:39
Noto Emoji Color fontconfig for Konsole
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<!--
Noto Mono + Color Emoji Font Configuration.
Currently the only Terminal Emulator I'm aware that supports colour fonts is Konsole.
Usage:
0. Ensure that the Noto fonts are installed on your machine.
1. Install this file to ~/.config/fontconfig/conf.d/99-noto-mono-color-emoji.conf
@gunjanpatel
gunjanpatel / revert-a-commit.md
Last active May 3, 2024 20:50
Git HowTo: revert a commit already pushed to a remote repository

Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:

@lukas-h
lukas-h / license-badges.md
Last active May 1, 2024 10:20
Markdown License Badges for your Project

Markdown License badges

Collection of License badges for your Project's README file.
This list includes the most common open source and open data licenses.
Easily copy and paste the code under the badges into your Markdown files.

Notes

  • The badges do not fully replace the license informations for your projects, they are only emblems for the README, that the user can see the License at first glance.

Translations: (No guarantee that the translations are up-to-date)

@sora
sora / Makefile
Last active March 22, 2018 02:42
Ethernet FCS calculation
all:
gcc -Wall eth_fcs.c -o fcs -lz
clean:
rm -f fcs
@mrtns
mrtns / gist:78d15e3263b2f6a231fe
Last active October 11, 2023 21:20
Upgrade Chrome from Command Line on Ubuntu
# Install
# via http://askubuntu.com/questions/510056/how-to-install-google-chrome
wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
sudo sh -c 'echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list'
sudo apt-get update
sudo apt-get install google-chrome-stable
# Update
@allex
allex / gist:11203573
Last active December 5, 2023 07:27
Ubuntu 安装中文字体

环境 (Environment)

版本:Ubuntu 14.04 LTS 默认语言:English(United States)

安装 (Setup)

Debian 和 Ubuntu 下对中文支持比较好的字体有: fonts-droid、ttf-wqy-zenhei 和 ttf-wqy-microhei 等,除了文泉驿系列字体外,比较流行的免费中文字体还有文鼎提供的楷体和上海宋,包名分别是: fonts-arphic-ukai 和 fonts-arphic-uming。