Hacker News on 23 October 2016

• Why you should never use Upwork
• HN comments are underrated
• Hack the Kernel – Learn about operating systems online
• PayPal 2FA Bypass
• The Remote Freelancer: A list of remote work alternatives to Upwork
• IPFS is the Distributed Web
• Battery technology may emerge as a trillion-dollar threat to credit markets
• The Best Way to Not Get Tenure
• Elon Musk SpaceX AMA
• Using Rowhammer bitflips to root Android phones