Category: security

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Hardened Tor Browser with Selfrando

6 June 2016, the Tor Project announced a hardened version of Tor Browser: 6.5a1-hardened. Here some links: Download page for hardened builds (only avaible for Linux at this time). Distribution direct

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Hide AES-256 encrypted zip file in a JPEG image

This how-to was made for Linux user. The user will need p7zip, exiv2 and optionally exif, exiftool, unzip. Create an AES-256 encrypted zip file# 7z (p7zip for Linux) can produce zip-format archives wi

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Pastejacking vs clipboard hijacking

Clipboard hijacking# It as been possible for a long time to use css (-9999px position trick) to append malicious content to the clipboard. Users doesn't notice anything and may execute unwanted comman

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c99.php : A backdoored backdoor

C99 is a PHP webshell. Attackers uploads it on web server in order to get information and above all execute commands with web user privileges (ex: www-data). This webshell is protected by a customizab

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Tracking down Tor users with mouse movements

Jose Carlos Norte, security researcher, wrote a post detailing how Tor Browser users can be uniquely fingerprinted using the mouse wheel, mouse speed, a CPU benchmark, and “getClientRects”. POCs (proo

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FreeBSD 10.3 is here

FreeBSD update to version 10.3. Main improvments: 15 security flaws patched UEFI support Gnome 3.16.2 Full Release Notes on official FreeBSD website.

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How to change OpenSSH port on CentOS 7

Before beginning# These are the steps to do on the SSH server. Be sure to do all the steps before exiting SSH connection if you are connected via SSH. This config was tested for default CentOS 7 iso.