Feeds

Über-zombie cookies give us the fear

Say hello to invulnerable evercookies

3 Big data security analytics techniques

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.

3 Big data security analytics techniques

More from The Register

next story
Obama allows NSA to exploit 0-days: report
If the spooks say they need it, they get it
Samsung Galaxy S5 fingerprint scanner hacked in just 4 DAYS
Sammy's newbie cooked slower than iPhone, also costs more to build
Putin tells Snowden: Russia conducts no US-style mass surveillance
Gov't is too broke for that, Russian prez says
Snowden-inspired crypto-email service Lavaboom launches
German service pays tribute to Lavabit
Mounties always get their man: Heartbleed 'hacker', 19, CUFFED
Canadian teen accused of raiding tax computers using OpenSSL bug
One year on: diplomatic fail as Chinese APT gangs get back to work
Mandiant says past 12 months shows Beijing won't call off its hackers
Call of Duty 'fragged using OpenSSL's Heartbleed exploit'
So it begins ... or maybe not, says one analyst
Heartbleed exploit, inoculation, both released
File under 'this is going to hurt you more than it hurts me'
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
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.
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.
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.