Feeds

Über-zombie cookies give us the fear

Say hello to invulnerable evercookies

Top three mobile application threats

Privacy activists got hot under the collar about the use of flash cookies to respawn traditional website cookies* but an even more persistent type of cookie that's almost impossible to kill off may lie just around the corner.

So-called in invulnerable evercookies use eight different techniques and locations to hide on tagged systems, including web history, HTML5 session storage and even the "RGB values of auto-generated, force-cached PNGs using HTML5 Canvas tag to read pixels (cookies) back out" as well as in flash or regular cookies. Providing just one copy of the cookie remains, the other locations are rebuilt.

The concept echoes Lord Voldemort hiding fragments of his soul in horcruxes in the Harry Potter books.

Developer Samy Kamkar explains the point of his idea: "Evercookie is designed to make persistent data just that, persistent. By storing the same data in several locations that a client can access, if any of the data is ever lost (for example, by clearing cookies), the data can be recovered and then reset and reused.

"Simply think of it as cookies that just won't go away."

Kamkar reckons using Private Browsing in Safari will stop ALL evercookie methods following a browser restart. He hasn't tested whether this approach work with other browsers. ®

* A Walt Disney internet subsidiary faces a civil lawsuit over its alleged use of Flash cookies to track users, including minors, as we reported here.

Combat fraud and increase customer satisfaction

More from The Register

next story
Obama allows NSA to exploit 0-days: report
If the spooks say they need it, they get it
Heartbleed exploit, inoculation, both released
File under 'this is going to hurt you more than it hurts me'
Canadian taxman says hundreds pierced by Heartbleed SSL skewer
900 social insurance numbers nicked, says revenue watchman
German space centre endures cyber attack
Chinese code retrieved but NSA hack not ruled out
Burnt out on patches this month? Oracle's got 104 MORE fixes for you
Mass patch for issues across its software catalog
Reddit users discover iOS malware threat
'Unflod Baby Panda' looks to snatch Apple IDs
Oracle working on at least 13 Heartbleed fixes
Big Red's cloud is safe and Oracle Linux 6 has been patched, but Java has some issues
prev story

Whitepapers

Mainstay ROI - Does application security pay?
In this whitepaper learn how you and your enterprise might benefit from better software security.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.