jdarpinian

///bin/true;COMPILER_OPTIONS="-g -Wall -Wextra --std=c99 -O1 -fsanitize=address,undefined";THIS_FILE="$(cd "$(dirname "$0")"; pwd -P)/$(basename "$0")";OUT_FILE="/tmp/build-cache/$THIS_FILE";mkdir -p "$(dirname "$OUT_FILE")";test "$THIS_FILE" -ot "$OUT_FILE" || $(which clang || which gcc) $COMPILER_OPTIONS -xc "$THIS_FILE" -o "$OUT_FILE" || exit;exec "$OUT_FILE" "$@"
#include <stdio.h>

int main() {
  printf("Hello world!\n");
  return 0;
}

joepie91

Your blockchain must have all of the following properties:

• It's a merkle tree, or a construct with equivalent properties.
• There is no single point of trust or authority; nodes are operated by different parties.
• Multiple 'forks' of the blockchain may exist - that is, nodes may disagree on what the full sequence of blocks looks like.
• In the case of such a fork, there must exist a deterministic consensus algorithm of some sort to decide what the "real" blockchain looks like (ie. which fork is "correct").
• The consensus algorithm must be executable with only the information contained in the blockchain (or its forks), and no external input (eg. no decisionmaking from a centralized 'trust node').

If your blockchain is missing any of the above properties, it is not a blockchain, it is just a ledger.

joepie91

Supported sites:

• Wired
• V3.co.uk

Requests for other sites are welcome (admin@cryto.net).

Changelog

• July 25, 2016: Added support for V3.co.uk.

defuse

Finger in the Middle Contest
=================================

Players:

    Defender - Tries to send a fingerprint over an insecure channel and wins iff
               they (1) detect every attack, or (2) successfully transfer the
               fingerprint.

    Attacker - Tries to modify the fingerprint sent over the channel.

0x27

#!/usr/bin/python2
# coding: utf-8
# Example of how not to code PHP... Not a serious exploit, just one for fun as
# an example of how fucking badly people screw up. Picked an app while githubbin'
# and heres the ruinage.
# Exploits trivial command injection, followed by abusing the lolsudo implemented.
# Seriously, this dudes programming licence needs to be revoked.
# BONUS: Includes SCTP Backconnect for Great Justice reasons :D
# Screenshot: http://i.imgur.com/0CWDs8m.png
# Twitter: @dailydavedavids

FredericJacobs

Analytics

Analytics track you, but they also keep local files really useful for forensics to gather evidence against you.

Google Analytics

Because of course, you need to know if people actually use it when it's developed by a PR firm. Google Analytics tracks a lot of your moves and stored locally in a cache then uploaded to Google servers. Every action is logged.

kristopolous

// Usage:
//   Copy and paste all of this into a debug console window of the "Who is Hiring?" comment thread 
//   then use as follows:
//
//   query(term | [term, term, ...], term | [term, term, ...], ...)
// 
// When arguments are in an array then that means an "or" and when they are seperate that means "and"
//
// Term is of the format:
//    ((-)text/RegExp)  ( '-' means negation )