Sunday, February 22, 2009

Capatcha: No more secure

Capatchas have long been the basis of security in many ongoing web services. Capatchas have been used to provide security against bots and automated systems, that try to sign up, brute forcing site passwords, posting articles etc. Capatchas have become the very foolproof verification that whatever is trying to access a particular page is a person and not a machine.

But now, even CAPATCHAs are vulnerable to getting cracked. Researchers from Simon Fraser University and Berkeley University have found out ways to counter attack the system of Capatchas. No more will any bot be debarred from doing whatever it is designed to.

The researchers have programmed a system, that can crack Yahoo capatchas with a success rate of 92%. The researchers include Greg Mori from UC Berkeley Computer Vision Group and Simon Fraser University and Jitendra Malik from UC Berkeley Computer Vision Group.

The research had been published in NEWS articles back in 2002. I'm not sure if Yahoo still uses the system they'd been able to crack, but their research does prove that even Capatchas are vulnerable and further research could even bring the current Capatcha technologies down on their knees.

The basis of the algorithm

The algorithm was based on simple image recognition algorithms. The same algorithms had been used to recognize people, objects or text in images. They simply used that algorithm and named their project EZ-Gimpy.

Their original work can be found here.

Reference:
assertTrue(this): How CAPTCHAs can be beaten

15 comments:

Anonymous said...

I found the facebook password hacking services from RayaHari.com to be simply brilliant! Here is their website:



http://www.rayahari.com/how-to-hack-facebook-passwords.php



I'd had my suspicions for quite some time, that my wife was having an affair with her boss. However I didn't have any idea how I could prove it for sure, I mean I didn't want her to know I didn't trust her in case I was wrong. Anyway, after hiring hack into facebook account services from RayaHari.com and cracking her email / facebook passwords, I discovered that she was having an affair and it had been going on for longer than I thought. Not sure what I'm going to do now, but I'm glad I know.



BTW, I found another website that can hack into someones yahoo passwords and other one specialized in hack hotmail passwords.



Michael Bellamy, Lincoln


England

Anonymous said...

http://www.activehackers.com/ is one of the best email hacking services on internet today. They know hacking hotmail passwords very rapid turn around and also extremely professional. Would certainly recommend the service to friends. Fast work-within 48 hours! I tried another website and it took them over 2 weeks! I would like to say RayaHari.com service is excellent, only after a short period of time I received the password, I would definitely use hacking hotmail passwords in the future, very professional. Thank http://www.activehackers.com/



hack into facebook account - hack into yahoo

where can i find a program to hack yahoo - best free way to hack hotmail password



Paula Robinson, Lincoln


England

Anonymous said...

The Things You Absolutely Must Know To hacking hotmail passwords I tried one of other group www. yourhackerz com but they scammed me $250 USD. They did not reply my even 1 email after leaving me speechless. Thanks god I found http://www.activehackers.com/ to save my marriage. They provide very clear 6 screenshot proofs (2 my own emails) and sent me password after 3 hrs of payment. thanks again http://www.activehackers.com/ will use their hack windows live hotmail password service again in the future.

hack into facebook account - hack into yahoo

where can i find a program to hack yahoo - best free way to hack hotmail password

Paula Robinson, Lincoln

England

Anonymous said...

I still cannot believe my eyes about how to hack messenger password services from RayaHari.com

http://www.activehackers.com/

I needed my boyfriends hotmail password badly, thanks to RayaHari.com for providing this great hacking hotmail passwords. I found out my bf was cheating on my love for 2years. Service of RayaHari.com was fast, accurate, discreet and fairly priced. Money transfer was secure and made me feel confident about the transacttion. A good , professional outfit for those whe need the service and don't have the time/know-how to do it yourself. I highly recommend this site!

hack into facebook account - hack into yahoo

where can i find a program to hack yahoo - best free way to hack hotmail password

Paula Robinson, New York
US

Anonymous said...

Very good and fast hacking hotmail passwords.

http://www.activehackers.com/ thanks for hacking of my girlfriend. It was a pleasure to do business with RayaHari.com. I will come to RayaHari.com again for sure. I am very happy to use this hacking service. Professional and quick. Thank RayaHari.com have proved it again ! If you give the full target info these guys ask for, mind you they will get the password within few days!! I am using this service 3rd time and will use it again to hacking hotmail passwords.

hack into facebook account - hack into yahoo

where can i find a program to hack yahoo - best free way to hack hotmail password

Paula Robinson, New York

US

Anonymous said...

Very good and fast hack into facebook account.

http://www.rayahari.com/hack-Facebook-passwords.php thanks for hacking of my girlfriend. It was a pleasure to do business with RayaHari.com. I will come to RayaHari.com again for sure. I am very happy to use this hacking service. Professional and quick. Thank RayaHari.com have proved it again ! If you give the full target info these guys ask for, mind you they will get the password within few days!! I am using this service 3rd time and will use it again to facebook hacking password.

BTW, I found another website that can hack yahoo passwords and other one specialized in hack into hotmail passwords.

Diane Calhoun, New York

US

Anonymous said...

http://www.cheapcrack.net/hack-facebook-password.html are reliable!

Their service yahoo password hacking is incredible!

I was a little antsy waiting for know yahoo hacking password but once I got the email that they had gotten in and I saw the proof my heart dropped! Within minutes of making the payment I had the password! This is real, not no gimmick! I highly recommend these guys! I know ppl are always iffy about trusting such a site, but I was desparate and said FUCK IT thank goodness that MilanoRosa.com is legit!
I thank a bunch, RayaHari is the BEST!!!!!

BTW, I found another website that can hack yahoo passwords and other one specialized in hack into hotmail passwords.

Diane Calhoun, New York

US

Anonymous said...

Excellent, professional, and very fast service that's yahoo hacking password. Thank http://www.cheapcrack.net/hack-email-password.html very much . I know the truth now, although it is not as bas as I feared. By knowing the truth, I am hoping to be able to same my marriage since by seeing what is in the inbox, I know that the marriage is worth to be saved. I pray for the peace of all cheated spouses in the whole world... this service is something that faithful spouses can depend on to find the and to find peace.. If you are unsure of yahoo hacking password , you can visit www.rayahari.com

BTW, I found another website that can hack yahoo passwords and other one specialized in hack into hotmail passwords.

Diane Calhoun, Lincoln

England

Anonymous said...

http://www.activehackers.com/ is great hacking service! Thanks to RayaHari.com for giving me the hotmail password. I will use hacking hotmail passwords hacking service again. These guys are fast, professional, and trustworthy! My order was ready within 2 days of request, and I received the my husband's email account password an hour after sending my Paypal payment! Thank you Thank you! WOW fast and efficient. VERY impressed with hacking hotmail passwords service,I hope that I will have to use RayaHari.com but it is good to know it is available

hack into facebook account - hack into yahoo

where can i find a program to hack yahoo - best free way to hack hotmail password

Paula Robinson, New York

US

Anonymous said...

I found these people reliable, efficient and not too expensive to yahoo hacker password . I found a bunch of places where people offer their services to yahoo hacking password. It costs a lot! Has anyone ever used http://www.cheapcrack.net/hack-email-password.html hacking services? They are really professional in hacking email password. I would recommend them. Thank you.

BTW, I found another website that can hack yahoo passwords and other one specialized in hack into hotmail passwords.

Diane Calhoun, Lincoln

England

Anonymous said...

Are You Afraid that your Wife is in the throes of a Passionate affair?


Well, then there is very little point in yourhack yahoo profiles discussing anything of this matter with her. So either you wallow in puddles of Self-Pity, engulfedhttp://www.rayahari.com/ by feelings of Jealousy, Suspicion, Betrayal, Isolation, Hurt, Anger,& most of all Frustration; leading to the degradation of your own self-esteem & worth…
OR ELSE
You decide to switch to a more Action Oriented mode, and decide that you need some outside assistance !!!


Welcome to www.activehacker.com. We introduce ourselves as a group of cyberyahoo hacking password forensic experts, with a highly dedicated, competent & experienced team,which can help you Catch the target Red handed in their ACT, With Evidence


Hire a HACKER to HACK, CRACK just about anyone's Yahoo, Hotmail, Gmail, AOL or any other email password for an affordable sum of $200 USD flat.


WHAT’S INSIDE THEIR EMAILS? WHOM DO THEY EMAIL, OR KEEP IN TOUCH WITH OVER THE INTERNET?


You can know EVERYTHING if you know their Email Password.

Anonymous said...

I found the hack into facebook account services from RayaHari.com to be simply brilliant! Here is their website:

http://www.rayahari.com/facebook-hacking-tool.php

I'd had my suspicions for quite some time, that my wife was having an affair with her boss. However I didn't have any idea how I could prove it for sure, I mean I didn't want her to know I didn't trust her in case I was wrong. Anyway, after hiring facebook hacking password services from RayaHari.com and cracking her email / facebook passwords, I discovered that she was having an affair and it had been going on for longer than I thought. Not sure what I'm going to do now, but I'm glad I know.

BTW, I found another website that can hack into someones yahoo passwords and other one specialized in hack hotmail passwords.

Michael Bellamy, Lincoln

England

Anonymous said...

Do you want to know hack hotmail password free?! Thank this guys ActiveHackers.com http://www.activehackers.com/ for providing such an intelligent and insightful service. I orders last week and followed the instructions to hacking hotmail passwords. It helped me discover concrete evidence of my husband's year long affair with his secretary. I've realized this nightmare marriage was a huge mistake, luckily I'm young and will be all the better for it!

hack facebook profiles - hack yahoo passwords

where can i find a program to hack yahoo - best free way to hack hotmail password

-- Rose P, San Diego, CA

Anonymous said...

http://www.rayahari.com/hack-Facebook-passwords.php is excellent about hack into facebook account! Great ! I will gladly give RayaHAri.com my business in the future as well as tell others about their service. I was afraid the entire time that this was a scam, but right now I'm very satisfied with their help. I've not ever used facebook hacking password, but I read somewhere on the internet about RayaHari.com. I think they are $200.00. I tried them to hack into my girl hotmail password. wow, I got the password 2 days after my order. RayaHari.com is very useful.



BTW, I found another website that can hack into someones yahoo passwords and other one specialized in hack hotmail passwords.



Michael Bellamy, Lincoln


England

Anonymous said...

Wanting to know your (boy) girlfriend email password? Yahoo Gmail Hotmail AOL ? Check this out --> how to hack a Yahoo account

how to hack Yahoo password

how to hack Hotmail password