Cloudflare CTO John Graham-Cumming has successfully cracked and decrypted a 30-year-old ZIP file, and has written a blog post about how he did it. John Graham-Cumming's blog: Cracking an old ZIP file ...

Are you trying to open a password-protected PDF or ZIP file? Then, you already know how frustrating it can be. You try out different tools, and the result is a ...

Zip encryption is vulnerable to known-plaintext attacks. Implementation quality also is an issue; WinZip's is particularly bad. No source, I'm afraid.

Having access to your documents and pictures is really easy these days. About a million services, including Dropbox and iCloud, allow you to sync your stuff between devices, but there’s one little ...