Malware that can build botnets out of IoT devices was at least partly responsible for a massive distributed denial-of-service attack that disrupted U.S. internet traffic on Friday, according to network security companies.

On Friday morning, the assault disrupted access to popular websites by flooding a DNS service provider called Dyn with an overwhelming amount of internet traffic.

Some of the traffic originated from botnets created by the Mirai malware, and is estimated to have infected over 500,000 devices, according to Level 3 Communications, a provider of internet backbone services.

About 10% of those Mirai infected devices were participating in Friday’s DDOS attack, said Dale Drew, the company’s chief security office in Periscope livestream. However, other botnets were also partaking in the attack, he added.

DDOS attacks and botnets are nothing new. However, the Mirai malware is extremely powerful in its ability to deliver server-crashing levels of traffic to websites.

The Mirai malware targets internet-connected devices such as cameras and DVRs that have weak default passwords, making them easy to infect. Adding to the worry is that the developer behind Mirai has released the malware’s source code to the hacker community.

Friday’s attack continued into the evening, according to Dyn. Its engineers had to mitigate “several attacks” aimed at its infrastructure. The company reported that the DDOS attacks came from “tens of millions of IP addresses at the same time.”

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Programming and Application Development – 61% plan to hire for this skill in the next 12 months, up from 44% in the 2010 survey. This covers the gamut from website development to upgrading internal systems and meeting the needs of mobile users.

Project Management (but with a twist) – The twist is that they’re not going to just be looking for people who can oversee and monitor projects. They also want people who can identify users’ needs and translate them for the IT staffers – the increasingly popular business analysts.

Help Desk/Technical Support – Mobile operating systems have added a new dimension to help desk and tech support.

Networking – This demand is being fueled partially by virtualization and cloud computing projects. The survey also revealed that execs will be looking for people with VMware and Citrix experience.

Business Intelligence – Computerworld interprets this uptick to a focus shift in many companies, from cost savings to investing in technology. That will be nice if it pans out that way.

Data Center – Virtualization and the Cloud could also be behind the increased need for IT professionals with backgrounds in data center operations and systems integration.

Web 2.0 – Tech skills centered around social media will be in demand, with .Net, AJAX and PHP as key backend skills, with HTML, XML, CSS, Flash and Javascript, among others, on the front end.

Security – Although down from 32 percent in the 2010 survey, security stays a top concern of IT executives.

Telecommunications – The survey indicates a demand for people with IP telephony skills, and for those familiar with Cisco IPCC call center systems.

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