As a number of giant tech companies have been hacked in the last few weeks, Twitter is upping its email security with a technology called DMARC. The company hopes its users will see less spam and phishing. In a blog post, the company described it as, “It builds on established authentication protocols (DKIM and SPF) to give email providers a way to block email from forged domains popping up in inboxes. And that in turn lessens the risk users face of mistakenly giving away personal information.” [Source: Twitter]