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Linux blog by Vivek - Includes news, help, tutorials, programming, tips and how-to guides for Linux, UNIX, and BSD.

Dark Reading is the premier online resource helping information security professionals manage the balance between protection and access. It offers breaking news and analysis on attacks, breaches and vulnerabilities, as well as strategies for protecti...

Nagios Enterprises provides commercial solutions around Nagios - the industry standard in IT infrastructure monitoring. Learn why organizations around the world trust our products to handle their IT infrastructure monitoring and business process con...

Linux and Unix notes

LinuxQuestions.org offers a free Linux forum where Linux newbies can ask questions and Linux experts can offer advice. Topics include security, installation, networking and much more.

Zabbix is an enterprise-class open source distributed monitoring solution for networks and applications.

SANS Internet Storm Center - A global cooperative cyber threat / internet security monitor and alert system. Featuring daily handler diaries with summarizing and analyzing new threats to networks and internet security events.

Tecmint - Linux Howtos, Tutorials, Guides, News, Tips and Tricks.

Real-time, web-based network management software. Download trials & free network monitoring tools to detect, diagnose, resolve network & bandwidth issues with network maps, alerts and dashboards. WMI, SNMP monitoring with NetFlow analysis.

The German "Stiftung Warentest" had a closer look (text is german) at instant messengers like WhatsApp, Telegram and Threema. The only one with a good privacy rating: Threema. When Facebook bought WhatsApp, many started to look fo...