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Security & Privacy

The most popular blog posts about security & privacy on Hacker News. 4,333 posts.

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391

What Happened to Facebook, Instagram, and WhatsApp?

Facebook and its sister properties Instagram and WhatsApp are suffering from ongoing, global outages. We don’t yet know why this happened, but the how is clear: Earlier this morning, something inside Facebook caused the company to revoke key digital records that tell computers and other Internet-enabled devices how to…

395

Web scraping for me, but not for thee

by guest blogger Kieran McCarthy There are few, if any, legal domains where hypocrisy is as baked into the ecosystem as it is with web scraping. Some of the biggest companies on earth—including Meta and Microsoft—take aggressive, litigious approaches to...

405

Crazy Thin ‘Deep Insert’ ATM Skimmers

A number of financial institutions in and around New York City are dealing with a rash of super-thin “deep insert” skimming devices designed to fit inside the mouth of an ATM’s card acceptance slot. The card skimmers are paired with tiny pinhole cameras that are cleverly disguised as part of the cash machine. Here’s a…

412

Zero-Width Characters: Invisibly fingerprinting text

In early 2016 I realized that it was possible to use zero-width characters, like zero-width non-joiner or other zero-width characters like the zero-width space to fingerprint text. Even with just a single type of zero-width character the presence or non-presence of the non-visible character is enough bits to…

418

The Line of Death

When building applications that display untrusted content, security designers have a major problem— if an attacker has full control of a block of pixels, he can make those pixels look like anything…