Author's Opinion

The views in this column are those of the author and do not necessarily reflect the views of iTWire.

Have your say and comment below.

Thursday, 06 December 2007 03:35

Shock! Horror! Wireless keyboards not secure

Forgive our cynicism, but why would anyone expect a relatively inexpensive wireless keyboard to be secure?

A Swiss company called Dreamlab Technologies has published a white paper describing in general terms how it was able to intercept the stream of keystrokes transmitted by two models of Microsoft 27MHz wireless keyboards.

To quote the summary, "After of analyzing wireless keyboard communication, Dreamlab is able to understand their functionalities, eavesdrop their traffic, crack the encryption key and decrypt the data into clear text keystrokes. The keystokes from any analyzed keyboard within the radio receiver's range can be sniffed at the same time."

It seems that the encryption applied to the data transmitted by the keyboard is so minimal that it hardly deserves the term. Each keystroke is XORed with a random byte generated when the keyboard and receiver are associated.

It's tempting to suggest this scheme could be cracked with pencil and paper once the data stream has been captured.

"Using simple wordlist checking in combination with a weightening algorythm [sic], every data in range can be decrypted within only a few keystrokes," wrote researchers Max Moser and Philipp Schrödel.

Dreamlab was able to construct a system to capture, decode and log streams of keystrokes from multiple wireless keyboards at once - a super wireless keylogger, if you like.

While Moser and Schrödel have provided a service by revealing just how insecure wireless keyboards, it's not that it's a new issue. Quite soon after wireless keyboards took off, users began to notice that one computer might start receiving keystrokes for another when both devices happened to pick the same code. Later models increased the number of device codes used in order to make such collisions less likely even in densely-packed offices.

That's not the same as deliberate eavesdropping, but it was a clear indication that wireless keyboards were not to be trusted - especially in an apartment block or multi-tenanted office building.

Subscribe to ITWIRE UPDATE Newsletter here


The much awaited iTWire Shop is now open to our readers.

Visit the iTWire Shop, a leading destination for stylish accessories, gear & gadgets, lifestyle products and everyday portable office essentials, drones, zoom lenses for smartphones, software and online training.

PLUS Big Brands include: Apple, Lenovo, LG, Samsung, Sennheiser and many more.

Products available for any country.

We hope you enjoy and find value in the much anticipated iTWire Shop.



iTWire TV offers a unique value to the Tech Sector by providing a range of video interviews, news, views and reviews, and also provides the opportunity for vendors to promote your company and your marketing messages.

We work with you to develop the message and conduct the interview or product review in a safe and collaborative way. Unlike other Tech YouTube channels, we create a story around your message and post that on the homepage of ITWire, linking to your message.

In addition, your interview post message can be displayed in up to 7 different post displays on our the site to drive traffic and readers to your video content and downloads. This can be a significant Lead Generation opportunity for your business.

We also provide 3 videos in one recording/sitting if you require so that you have a series of videos to promote to your customers. Your sales team can add your emails to sales collateral and to the footer of their sales and marketing emails.

See the latest in Tech News, Views, Interviews, Reviews, Product Promos and Events. Plus funny videos from our readers and customers.


Stephen Withers

joomla visitors

Stephen Withers is one of Australia¹s most experienced IT journalists, having begun his career in the days of 8-bit 'microcomputers'. He covers the gamut from gadgets to enterprise systems. In previous lives he has been an academic, a systems programmer, an IT support manager, and an online services manager. Stephen holds an honours degree in Management Sciences and a PhD in Industrial and Business Studies.

Share News tips for the iTWire Journalists? Your tip will be anonymous




Guest Opinion

Guest Interviews

Guest Reviews

Guest Research

Guest Research & Case Studies

Channel News