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Captcha

Posted on 28th August, 2008 by Heather

“Captcha is the bane of the internet,” says Matt Mullenweg, who runs the massively popular blogging site Wordpress.com. “I can’t figure them out myself half the time!” (from the Guardian technology page today)

This is from a Guardian piece discussiing how captchas are welll and truly broken - by algorithms and by cheap human labour -thus increasing the volume of blog comment spam. The writer suggests Akismet or the type of non-machine readable questions that you find on ApathySketchpad as viable alternatives.

I’m comment-impaired at the best of times. I’ll try and comment on a blog and find that my comment just disappears. Granted, this suggests the universe has an innate capacity for mercy. But, just occasionally, the words that disappear into the net’s black hole were comments that I really wanted to make. So, I’ll try and rewrite it, in a half-hearted fashion. It will disappear again. I’ll have a final stab at writing. And sending. But by this time, it’s incoherent garbage, sent only to show the comment-eating demon who’s boss.

And then the captcha is there mocking you. Matt Mullenweg is so right, except, on his own proud boast, at least he gets them right half of the time. Falling foul of captcha is a daily occurrence here at WhyDontYou Towers. And a score of 50% correct is just a fond dream.

The idea is that only humans can read the things. A reverse Turing test. This whole concept falls down on the point that any shapes that are too unlike characters to be read by a souped up OCR-style algorithm are much too unlike letters or numbers for human beings to interpret them.

Even when you can distinguish those shapes that are meant to be characters from the deliberately inserted wavy lines, you face something like:

oo9I0g

There is no way to reliably distinguish between 9 and g, 0 and O, 1 and l and I.

So you type in zero zero nine one zero g, on the offchance. It rejects you. You don’t get another shot at the ambiguous letters.

Oh no. A fresh bleeding captcha. This time you find you have to choose between identifying a letter as either a very thin letter j or the letter i with a slight curve at the bottom. Failed again.

Next time it’s either an l with a slight curve at the top or an anorexic letter c. Ok, got the c right but then you thought that oddly shaped capital A was a 4, didn’t you? Robotic fool.

By this time, the human-detector software has often decided you are a bot cos you couldn’t even guess one out of 3. So your comment is bounced anyway.

If you’ve ever thought that you might as well go for the disabled option, don’t bother. That’s not worth it either. Captchas that claim to be for the disabled are actually even harder to use than their able-bodied comrades. Different experiences you can have with the accessibility captcha include:

  • A long silence. So you think it’s not working and cancel a fraction of a second after it kicks in.
  • so much feedback and background weird noises (to simulate the visual noise on the visual captcha) that you couldn’t even work out what it’s saying if you had a comic book aural discrimination superpower.
  • Voices so bizarrely accented and echoey that you are stunned by the novelty that this is suposed to represent speech. So you don’t notice, let alone memorise, the content as it racespast you in a jumble of syllables.
  • The disabled version sometimes matches the written one and sometimes doesn’t. Which one do you try? The wrong one, of course.

The whole concept of the disabled one seems stupid to me. You are assumed to be too blind to see the captcha image. So how do you see the captcha box and spot where the disabled button is? Are the blind fitted with memory enhancement chips that let them translate a string of meaningless letters and numbers from the native gibberese AND remember them long enough for their screen reader to kick in and tell them where to type?

Popularity: 4% [?]


Popularity: 4% [?]

Wittering on about blog spam again

Posted on 25th August, 2008 by Heather

This blog feels slightly shortchanged in the weird searches department. For example, if you look at HjHop’s site, he gets searches that are bizarre enough for him to make a funny feature of them.

Search engine choices that bring unsuspecting people here are generally just odd. Not entertaining, just odd. Normally, there are between 5 and 15 for Schwarzenegger (?) and similar numbers for pictures of guns. (??????) Sometimes, castles come top, usually Bodium castle - but there were only 7 searches for this today. Today’s search referrals also included Rorschach (‎7) art and fine art, (‎6) and (‎5). 5 Fruit and veg is normally a front runner but came nowhere today. I defy anyone to make a readable post out of that lot.

I suspect noone has ever been directed by a search engine to what we fondly believe is the normal content of our posts.

But this blog could acquit itself well, if it ever gets in a competitive event relating to volumes of blogspam. According to Wordpress stats for this blog, there have been 2,624 approved comments but

Akismet has protected your site from 13,409 spam comments already

Akismet doesn’t even cover the whole life span of the blog and it’s probably been reinstalled a couple of times - hence, reset to 0 - but even on these figures, that’s a good few times as many spam comments as there were legit ones.

There are clearly spam fashions. I quite admire the craftsmanship involved in the ones that have generic phrases designed to flatter you into allowing the comment through the filter:

Love your blog. I’ll bookmark it and return later.

or the old favourite from last year, with words to the effect that:

I didn’t quite understand what you said on [insert name of blog] but I’m interested to know more.

However, it’s as if the heart has gone out of the spammers. This week’s “new black” for spam seems to involve sending some random syllables, occasionally with a load of links:

qkncihdf tjnprcd mitqlanp oznqx eaqrpzu imfwatulo sjmxrqgh

for example. Or, what about this, where even the links don’t make an effort to disguise their innate spammishness, let alone entice the unwary with promises of free meds or unfeasible bodily expansion?

biprong unbrimming martinetism bosn amative biota spongida expectingly
ziafm wnwwqwuy
http://jdskmnffl.com
ktuhbdk info
http://jlvxkeva.com
uosgu wcmqjs
http://sgqwajre.com
kxrrd qzfkagqn

What’s going on? There are eleven of these in the Akismet spam queue today. Not one has an English word in it.

The Register had a long security post about blogspam, on Friday. The article was about a malware scam that claims to take the user to various legit sounding places.

Over the next several weeks I noticed a lot more of these, not only pointing to Google but also to Yahoo and MSN. The servers they pointed to all had the same basic structure, such as google-homepage.google-us.info, msn-us.info, yahoo-us.info, etc. Every one resolves to the same IP address: 124.217.253.8. That IP address is registered to Piradius.net in Singapore. The server appears to be hosted out of Kuala Lumpur. The domains, however, are registered in Ukraine:

(They’ve all moved since the article was written, of course.)

The rest of the article is fascinating. Click on one of these imaginary images and they run an executable. The article shows a series of legit looking screendumps, with the alerts very well designed. They put the fear of malware into you and offer you apparently Microsoft-approved solutions. There’s even a blag Microsoft Security Centre. The only intrinsic design flaw was that it said XP Security Centre, which was immediately suspicious to someone running Vista.

I’m as much of a mug as anyone. I just hope I haven’t fallen for any of these…….

One thing I’m pretty sure this blog been subject to (thanks to Firestats’ fund of fascinating information on referrers) is a hack of restricted Wordpress content using the Google cache. It just involves asking for things from the cache by modifying the url request string. (I’ve done that by accident I suspect)

That password-protected site of yours - it ain’t
It’s one of the simplest hacks we’ve seen in a long time, and the more elite computer users have known about it for a while, but it’s still kinda cool and just a little bit unnerving: A hacker has revealed a way to use Google and other search engines to gain unauthorized access to password-protected content on a dizzying number of websites.

We don’t have any restricted or pay-per-view content,so no loss as far as this blog is concerned. But, it’s sort of blog-validating to be in there in a “dizzying number.” :-)

Popularity: 3% [?]


Popularity: 3% [?]

Pipex still sucks

Posted on 7th August, 2008 by TW

Long suffering readers of this blog will be aware of the problems I have had with my crappy ISP. Pipex used to be really good, and I have used them for years, then one day they were taken over by Tiscali. Tiscali had a reputation for being a terrible ISP, so logic would have said they’d buy a good one and learn how to improve.

No.

Tiscali took over Pipex and it went down the toilet. My internet connection is normally barely better than a 56k dial up modem. I have been trying to change ISPs, however I am caught between the problems of being on a contract with (the no longer existant) Pipex and being due to move house in a few months (making a new contract a pain in the ass). As a result I have to suffer this interminable service for a while longer.

To prove a point, this is what my connection has been like for the last year:

There are some gaps in the results - normally because for long periods of time my connection is so slow it wont run. Isn’t that a fantastic example of the modern, 24/7 connected society we live in.

Sadly, there is nothing I can do about it except continue in my quest to spread the word about what poor service Tiscali/Pipex offer. If you know anyone in the UK, please feel free to warn them! :???:

Popularity: 9% [?]


Popularity: 9% [?]

Wordpress Upgrade

Posted on 23rd July, 2008 by TW

For the techies amongst you, WP 2.6 is now on the streets. (and has been for over a week - but I’ve been away). The promo video is:

When I get back to my proper PC, real content will be blogged once more.

Popularity: 14% [?]


Popularity: 14% [?]

Rise of the Machines

Posted on 27th June, 2008 by TW

It is official. I hate all forms of technology. However, all of them hate me a LOT more. Truly the rise of the machines is inevitable and I will have to accept the day when my computer overlords stop toying with me and REALLY begin to punish me.

Over the last few weeks I have spent many, many hours of my life trying to reason with my computer overlord to try and get it to do simple tasks like connect to the internet or actually connect to the network it things has a maximum strength signal. You know, really challenging things like that. I have come to accept that Vista is actually the Devil Incarnate (don’t think Linux is any better…) but now I am learning where the acolytes hide.

I have an iPod nano and an iPod shuffle. I have had them for ages (both were presents, I am too tight fisted to buy things like that) and they used to work fine. However, since the Rise of the Machines has begun, they now make my life hell.

Over the last three weeks, both have intermittently ceased to work and forced me to reinstall their software from scratch several times. This is not normal behaviour for them - I’ve had the nano with no problems at all for two years… This was annoying but I could live with it.

Also in the last month, my Nikon Picture Project software (I use it to download images from my camera to the pc) has decided to stop noticing when the camera is attached. This forces me to use explorer to go into the camera (it is treated as a drive) and copy the files. The problem with this, is I now have to rename and batch process in separate stages. Time consuming but not life threatening, I suppose.

After a week of working fine, every time I attach my phone to the PC to update calendar / contacts, I get a slew of error messages saying some unknown driver hasn’t installed properly. Again, annoying but I can live with this.

The spell checker in Firefox (which I use to write this, so I am pretty dependent on it..) has decided to only work 1 time in 10. This is not one of those times so I will apologise for all typos now…

Today’s FINALSTRAW©™® is iTunes. When I got my new computer I backed up all my old music to an external HDD and copied it to the new machine. For some reason iTunes decided that meant it needed to have three entries for every song - giving me over 3600 entries. I spent what felt like 10 years deleting the spurious entries and everything worked fine. Tonight I have opened iTunes and they are all back. All of them. For good measure, there are even more entries this time. It seems that all my podcasts have now been duplicated. I am sure it is doing this to see if it can push me to a nervous break down. It is close…

I am about to search google to see if I can find an automated way to delete the spurious entries (as they dont actually point anywhere), if my internet connection dies as I try to find the solution it will be the final proof my PC is now sentient and is waging a guerilla war against me.

Popularity: 19% [?]


Popularity: 19% [?]

Time to lighten the mood

Posted on 23rd June, 2008 by TW

I will applogise for the last few posts here being a bit morose and screaming about the doom and gloom of our crazy world. To try and make things better (and to shamelessly get more hits on my flickr stream :-) ) I want you to have a look at these four castle pictures and let me know which one you think is the best - comments on flickr would be preferred but here will do :-)

Chirk Castle Tower Scrabo Tower Killyleagh Castle Clouds over Hillsborough Fort

Thanks for your patience and the normal miserable service will resume tomorrow.

Popularity: 26% [?]


Popularity: 26% [?]

Fame and Fortune

Posted on 14th June, 2008 by TW

Well, actually maybe neither fame or fortune, but I have just realised I am a “featured photographer” on Flickr now! (Check out the Strangford pages, you may have to scroll down a bit though…). I am sure this is of little interest to any one who is not in my immediate family, but I couldn’t resist :-) [edited to add Newtonabbey pages as well! Wow!]

Popularity: 19% [?]


Popularity: 19% [?]

At last, a use for Javascript

Posted on 4th June, 2008 by Heather

spEak You’re bRanes has a Twat-o-Tron. (It generates random comments, plucked from Have Your Say section of the BBC’s website.) *

This site is so brilliant that you’ll want to wave your arms in circular stirring movements and punch an invisible ceiling and shout “You go, girl!” and other demonstrative American talk-show things. But it’s very British, so I will have to restrain myself to a “Jolly good job, that chap.”

All the comments quoted were found on the BBC “Have Your Say” site. Yes, people really have written them. On purpose as far as I can tell. (from spEak You’re bRanes)

The twat-o-tron will give you the distilled flavour before you dip into categories like “Armchair Warriors” on the whole site.

This blog is dedicated to the dribble-spattered lunacy of BBC “Have Your Say” discussions. Part of me thinks that the right-wing “blogosphere” of America is encouraging its slow readers to get over to the BBC and add their ill-informed opinions… but another part of me fears that the sample is actually more representative… perhaps the majority of people in the world really are this awful and stupid. (From the about page of spEak You’re bRanes )

I tend to assume that most of the BBC comments that cause apoplectic rage fits are spoofs. (It’s wishful thinking, I know, but leave me some illusions.) However, if even 1 in 10 of these comments are legit, it makes you wonder how people can be that stupid and still manage to operate an email account.

[hat tip: Alun Salt]

* (Don’t use Internet Explorer 6 though. It works but its hard to read.)

Popularity: 22% [?]


Popularity: 22% [?]

Wowee science week

Posted on 29th May, 2008 by Heather

Wow number 1
A cursory check hasn’t turned up any other blogs that deal with this one. So, here’s a link to BBC post about a fossil fish that presents evidence of live birth.

The 380 million-year-old specimen has been preserved with an embryo still attached by its umbilical cord.
The find, reported in Nature, pushes back the emergence of this reproductive strategy by some 200 million years.

In your faces, yet again, young earth creationists. Though I suppose it’s another of those incomprehensible god-tests where he sticks evidence that contradicts the book of genesis just to sort out those people who prefer evidence to myth so he can put their names in the “go straight to hell for doubting the magic words” book

Wow number 2

Monkeys have been able to control robot arms to feed themselves, using the power of thought alone.

I’m not the world’s greatest fan of messing about with the bodies and brains of animals but the implications of this research are pretty amazing.

Does this mean that we can finally carry out the 100 monkeys with typewriters experiment?

Wow number 3

Mars. How great that it looks like an abandoned farm planet.

Small whines.. I have to moan a bit about the false colouring, which makes the enterprise seem a little spurious. Why didn’t they use colour cameras? (Yes, space bandwidth, and so on. I don’t care. I want full-colour images.)

And I could have done with fewer pictures of the lander. It’s a bit like taking a holiday in Angkor Wat and then putting yourself in the foreground of every photo.

Aside from these tiny gripes about the presentation, seeing the surface of Mars is fantastic.

Popularity: 17% [?]


Popularity: 17% [?]

Power points

Posted on 19th May, 2008 by Heather

Another leaked secret wiki-leaks style memo in an occasional series. I bring you the top secret Powerpoint manual issued to the leaders of all educational institutions, companies and government agencies*

The 10 rules of giving a Powerpoint presentation:

  • Don’t bother to check that the projector works before the room is full. Log in to the Windows desktop first then search for your presentation. This will build rapport with your audience.
  • Use a preset background. These make text so readable and they are so attractive to the eye to a captive audience. A dark background is always a good choice with navy text. Yellow swirls can complete the viewer’s experience.
  • Preset transitions are also always appreciated. Why not try a different fade-in for each slide. And bring in every paragraph separately. This was groundbreaking in 1996 and it’s just as great now.
  • Some presentations fail to impress by being too short. Use at least 30 slides, if possible.
  • Always schedule your presentations at convenient times.  If it’s not possible to span the standard lunch break, time your presentation for the half-hour just before lunch.  No one will mind at all if you overrun.
  • Read every word on every screen. I cannot repeat this enough. Many people whom you employ may be unable to read. Others may be secretly blind, hiding that fact by expertly touch-typing their sales reports. Spare them the agony of endless bluffing. Read every word on the screen. Twice is even better.
  • Pace the speed of your reading. Read at least twice as slowly as the time that it takes the least literate person in your audience to read the words twice.
  • Keep to a huge font size when you are presenting in a small room. Tiny fonts go down well in larger venues
  • Use acronyms wherever possible. Always use at least one acronym that you can’t remember what it stands for. This gives your audience something to ask about at question time.
  • Everyone enjoys seeing banalities spelled out in a bullet point format.  In a meeting room.   If you are presenting unpleasant facts - such as redundancies - the experience of sitting through a well-planned Powerpoint presentation will soften the blow enormously.

***************************
Inspired by the devotion to Microsoft Powerpoint that I share with Andrew, XanderG, heather-the-other, who all mentioned Powerpoint’s unique blessings when they commented on the previous post.

Popularity: 18% [?]


Popularity: 18% [?]