Michael A Cossenas is a Linux/Network adminstrator from Athens, Greece.
He's been a network security specialist working for Digital Sima, a company specialized in LAN/WAN networking. He is now employed as a subcontractor for IBM Greece in the SO (Strategic Outsourcing) department. Here, he manages 50+ SUSE-based Linux servers for one of their customers.
His first experience with Linux was back in 1998, when he used Red Hat Linux 5.2. Since then, Michael has worked on various open source projects, including Zimbra, Distributed Replicated Block Device (DRBD), Kernel-based Virtual Machine (KVM), and Postfix.
He is also an openvpn forum moderator.
Vinoth Kumar Selvaraj is working as an OpenStack engineer at Cloudenablers, a Cloud Technology start-up based in Chennai, India. At Cloudenablers, he takes care of setting up private and hybrid clouds for internal/external customers. He also leads the CloudLab initiatives, which involve the exploration and integration of various products and tools with the latest versions of OpenStack.
Also, he worked as a reviewer for the book Openstack Cloud Security.
In his spare time, Vinoth enjoys sharing his insights on technologies at http://www.hellovinoth.com.