Xor Byte ShabbirHasan1

Self-hosted Stalwart mail server

Self-hosted Stalwart mail server

PostgreSQL

g.co, Google's official URL shortcut (update: or Google Workspace's domain verification, see bottom), is compromised. People are actively having their Google accounts stolen.

Someone just tried the most sophisticated phishing attack I've ever seen. I almost fell for it. My mind is a little blown.

Someone named "Chloe" called me from 650-203-0000 with Caller ID saying "Google". She sounded like a real engineer, the connection was super clear, and she had an American accent. Screenshot.
They said that they were from Google Workspace and someone had recently gained access to my account, which they had blocked. They asked me if I had recently logged in from Frankfurt, Germany and I said no.
I asked if they can confirm this is Google calling by emailing me from a Google email and they said sure and sent me this email and told me to look for a case number in it, which I saw in

hi, i'm daniel. i'm a 15-year-old high school junior. in my free time, i hack billion dollar companies and build cool stuff.

3 months ago, I discovered a unique 0-click deanonymization attack that allows an attacker to grab the location of any target within a 250 mile radius. With a vulnerable app installed on a target's phone (or as a background application on their laptop), an attacker can send a malicious payload and deanonymize you within seconds--and you wouldn't even know.

I'm publishing this writeup and research as a warning, especially for journalists, activists, and hackers, about this type of undetectable attack. Hundreds of applications are vulnerable, including some of the most popular apps in the world: Signal, Discord, Twitter/X, and others. Here's how it works:

Cloudflare

By the numbers, Cloudflare is easily the most popular CDN on the market. It beats out competitors such as Sucuri, Amazon CloudFront, Akamai, and Fastly. In 2019, a major Cloudflare outage k

Performance Engineering, Hardware and cache awareness with algorithm and data structures

Parallel Computing Course - Stanford CS149, Fall 2023
Performance-Aware Programming Series by Casey Muratori
Algorithms for Modern Hardware
Computer Systems: A Programmer's Perspective, 3/E - by Randal E. Bryant and David R. O'Hallaron, Carnegie Mellon University
Performance Engineering Of Software Systems - am MITOCW course
Parallel Programming 2020 by NHR@FAU
Cpu Caches and Why You Care - by Scott Meyers
[Optimizing a ring buffer for throughput](https://rig

	"""
	The most atomic way to train and inference a GPT in pure, dependency-free Python.
	This file is the complete algorithm.
	Everything else is just efficiency.

	@karpathy
	"""

	import os # os.path.exists
	import math # math.log, math.exp

	import numpy as np

	cimport numpy as cnp
	from libc.stdint cimport uint64_t, int64_t


	cdef class RingBufferOneDim:
	"""
	A 1-dimensional fixed-size circular buffer for floats/doubles.
	"""

	from libc.stdint cimport uint32_t

	from mm_toolbox.time.time cimport time_s

	from .engine cimport OrderAction

	cdef class RateLimitCounter:
	cdef:
	uint32_t tokens_per_sec
	uint32_t tokens_remaining

	#!/usr/bin/env bash

	# Default values for percentages
	DEFAULT_WIRED_LIMIT_PERCENT=85
	DEFAULT_WIRED_LWM_PERCENT=75

	# Read input parameters or use default values
	WIRED_LIMIT_PERCENT=${1:-$DEFAULT_WIRED_LIMIT_PERCENT}
	WIRED_LWM_PERCENT=${2:-$DEFAULT_WIRED_LWM_PERCENT}

	#!/bin/bash

	# Function to prompt user for yes/no input
	ask_yes_no() {
	while true; do
	read -p "$1 (y/n): " yn
	case $yn in
	[Yy]* ) return 0;;
	[Nn]* ) return 1;;
	* ) echo "Please answer yes or no.";;

	// Update 2025-05-22 — ported to rand v0.9, using a struct with Display impl rather than returning a string

	struct MarineLine;

	impl std::fmt::Display for MarineLine {
	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
	use rand::{Rng, seq::IndexedRandom};

	let marine_life = ["🐳", "🐠", "🦈", "🐙", "🐡", "🐬", "🐟", "🦀", "🐋"];
	let water = [