MarkNjunge

val spannableString = SpannableString("Loading...")
val transparentColorSpan = ForegroundColorSpan(Color.TRANSPARENT)

ValueAnimator.ofInt(0, 4).apply {
    repeatCount = 10
    duration = 1000
    addUpdateListener { valueAnimator ->
        val dotsCount = valueAnimator.animatedValue as Int
        if (dotsCount < 4) { // 4 is the number of ellipses + 1
            spannableString.setSpan(

MarkNjunge

var text = editText.text.toString()

// Save the original text without the tags
val original = text.replace(spoilerTag, "")

// Get the character ranges
val ranges = mutableListOf<Pair<Int, Int>>()
while (text.contains(spoilerTag)) {
    // Get start and end of spoiler tags
    val start = text.indexOf(spoilerTag)

MarkNjunge

private fun updateTextView(plainText: String, ranges: MutableList<Pair<Int, Int>>) {
    val spannableString = SpannableString(plainText)

    ranges.forEach { range ->
        // Make the range
        spannableString.setSpan(object : ClickableSpan() {
            override fun onClick(widget: View) {
                // Remove clicked range from the list
                ranges.remove(Pair(range.first, range.second))

MarkNjunge

Overview

What is XSS?

Cross-site scripting (XSS) is a code injection attack that allows an attacker to execute malicious Javascript in another user's browser.

Unlike other attacks such as SQL injection, XSS does not target the application, rather it targets the end user. However, the attacker does so by explioting a vulnerability in a website that the user visits.

How the malicious Javascript is injected

MarkNjunge

    defaultConfig {
        android.applicationVariants.all { variant ->
            variant.outputs.all {
                def date = new Date()
                def formattedDate = date.format('YYYYMMdd')
                outputFileName = "appname-${variant.name}-${formattedDate}.apk"
            }
        }
    }

MarkNjunge

{
  "name": "Mark Njung'e Kamau",
  "email": "mark.kamau@outlook.com",
  "github": "https://github.com/MarkNjunge",
  "website": "https://marknjunge.com",
  "linkedin": "https://linkedin.com/in/marknjunge",
  "cv": "https://marknjunge.com/Mark Kamau CV.pdf",
  "seekingEmployment": false,
  "experience": [
    {

MarkNjunge

version: '3'
services:
  # MongoDB: https://hub.docker.com/_/mongo/
  mongo:
    image: mongo:4.2
    networks:
      - graylog
    volumes:
      - mongo_data:/data/db
  # Elasticsearch: https://www.elastic.co/guide/en/elasticsearch/reference/7.10/docker.html