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Weird and wonderful: the "Webdriver Torso" mystery videos explained - and remystified!

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If you're not up to speed with the latest in conspiracy theory, you need to know about the eerie YouTube sensation known as "Webdriver Torso".

We demystify the story; give you some tips on how to make your very own Webdriver Torso video; and ultimately remystify the whole thing...

New Year's #sophoscrossword 2013/2014: And the winners are...

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Well done to everyone who tried the New Year's #sophoscrossword!

Here are the answers, the solvers, the winners, and - just to spice up the competition for next time - there's a "by country" leaderboard, too...

SSCC 129 - Hypervisors, apologies, backdoors and Twitter hacks [PODCAST]

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Chet and Duck look at the security stories that made the headlines over New Year 2013/2014 - from the OpenSSL "hypervisor hack" that wasn't, to the Skype Twitter breach that shouldn't have happened - and explain how we can learn from these mistakes to have a safer and more secure 2014.

Try our NYE #sophoscrossword and win a T-shirt!

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Are you working over the New Year?

Whatever you're up to, but especially if you're on year-end sysadmin or tech support duty, here's a bit of fun that nevertheless counts as real work. (But don't quote us on that!)

Winners of the BH2013 #sophospuzzle - and how to solve it!

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Here are all the winners in the recent BlackHat 2013 #sophospuzzle.

And, of course, an explanation of how to solve it.

AusSHIRT 2013 - the #sophospuzzle instructions in full

The AusCERT 2013 conference has started, so the AusSHIRT 2013 #sophospuzzle is officially live.

See if you can transform the code on the T-shirt and win a prize!

(You don't have to be at the conference to enter.)

Chess CAPTCHA - a serious defence against spammers?

Chess CAPTCHA - a serious defence against spammers?

Spammers are told they have to solve a chess puzzle before they can leave junk messages.

Windows passwords: "Dead in Six Hours" - paper from Oslo password hacking conference

Windows passwords: "Dead in Six Hours" - paper from Oslo password hacking conference

The total number of Windows passwords you can construct using eight keyboard characters is vast: one followed by 16 zeros, or near enough.

Gone in six hours.

Plus you get to heat your house at the same time.

Wall of Fame for the #sophospuzzle - see who solved it and how fast

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By popular request, here is the leaderboard for the Skyfall #sophospuzzle.

The solvers are listed in speed order.

Hints on solving the Skyfall #sophospuzzle before it's too late!

Hints on solving the Skyfall #sophospuzzle before it's too late!

Some hints to help you solve the latest #sophospuzzle before the deadline.

If you haven't tried it yet, perhaps this will help convince you that it's solvable after all. Go on - get your virtual secret agent tuxedo on, and give it a go.

Fancy yourself as James Bond? Take on the #sophospuzzle and win a NERF gun...

Fancy yourself as James Bond? Take on the #sophospuzzle and win a NERF gun...

There's a new #sophospuzzle on the go!

This time, the theme is Skyfall and Bond, James Bond. You'll handle a field message from another agent, decode a data file stolen from M's computer, and unravel a secret location - all in a day's work for the world's best-dressed secret agent.

VIDEO: How to solve the AusCERT 2012 #sophospuzzle

Mythbuster meets FPSRussia?

By popular demand, here is a video explaining how to solve the puzzle we published on our AusCERT 2012 conference T-shirt.

44 solvers from 14 countries cracked it in the time allowed - find out how they did it!

The full AusCERT 2012 #sophospuzzle - cut, paste, solve, NERF!

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Here is the full text of the #sophospuzzle from this year's AusCERT T-shirt.

Cut, paste, solve and get in the running to win a NERF gun.

Calling all #sophospuzzle fans - AusCERT is here, and so is #DECODEME 2012!

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Join those who are attending the AusCERT 2012 conference, and get stuck into the latest #sophospuzzle.

You don't have to be at the conference to enter and win!

VIDEO: How to solve the RSA 2012 #sophospuzzle

VIDEO: How to solve the RSA 2012 #sophospuzzle

By popular request, here is a video explaining how to solve the cryptographic puzzle we published on our RSA 2012 conference T-shirt...

Take on the RSA 2012 #sophospuzzle and win a NERF gun!

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Join in with those attending RSA 2012 and get in the running to win a NERF N-STRIKE Vulcan EBF-25.

You don't have to be at the show to enter and win!

All the #sophoscrossword winners for 2011/2012

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Check out the country-by-country medal count for the 2011/2012 #sophoscrossword!

You'll also find hints (if you got stuck along the way but still want to finish under your own steam) or a full solution (if you just want the answers).

Try the #sophoscrossword this New Year's Eve!

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Are you working over New Year, like Sophos Support and SophosLabs?

If so, here's a bit of fun - official, educational fun! - to tide you over: a crossword puzzle with an IT theme.

Stop press:number of prizes now boosted to 30.

VIDEO: How to solve the #dragontattoo #sophospuzzle

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By popular request, here is a video explaining how to solve the Dragon Tattoo-themed puzzle we published earlier this week...

Try the #dragontattoo #sophospuzzle and win a Lego Mindstorm!

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We're running a two-stage Christmas puzzle with a Dragon Tattoo flavour.

Put your puzzle-solving skills to the test and you could win one of three Lego Mindstorms!