Below is a draft blog post addressing this topic from a security-awareness perspective.

Security researchers have identified a clever new phishing technique called the "File Archiver in the Browser". Here is how a typical scam might play out:

For decades, .zip was just a file extension for compressed archives. Today, it’s also a , just like .com or .org . This means ebooks.zip isn't necessarily a file sitting on your computer; it can be a live website owned by anyone—including cybercriminals. The "File Archiver in the Browser" Trick

This attack leverages over 30 years of "Pavlovian behavior". We trust .zip files. Furthermore, many messaging platforms and email clients automatically turn text ending in .zip into a clickable link, making it even easier for users to stumble into these traps.

While "ebooks.zip" might sound like a simple folder of digital books, it is frequently associated with modern and the rise of .zip top-level domains (TLDs) . In 2023, Google introduced several new TLDs, including .zip , which allowed anyone to register websites ending in that extension. This has created a significant phishing risk, as a link that looks like a file name—such as ebooks.zip —could actually be a link to a malicious website designed to steal credentials or deliver malware.

In the age of instant downloads, we’ve all been conditioned to click. We see a link for Summer_Reading_List.zip or Ebooks.zip and our brain immediately thinks: "Ah, a folder of books." But thanks to recent changes in how the internet works, that click could be far more dangerous than you think.

When you click, instead of downloading a file, your browser opens a website. This site is expertly designed to mimic the look of file-archiving software like WinRAR or Windows File Explorer.