Ultimate hacking method for Linux revealed – tap backspace 28 times

By Park Sae-jin Posted : December 21, 2015, 14:26 Updated : December 21, 2015, 14:26

[Photo by Park Sae-jin]



Major security breach had been found on Linux. A group of security researchers found a way into Linux operating system (OS) ubiquitous “Grub 2” bootloader. It’s simple because all the hacker has to do is- tap “backspace” button 28 times in a row.

Linux is widely used OS because it’s free, open software, and for its potential of expansions. The OS is popular, almost a must among programmers and coders, pros and amateurs alike. It is used on servers, smartphones (Android is built on top of Linux kernel) and on most of the supercomputers.

Because Linux is so widespread, this revealed hacking method could be a problem. Just about everything on Linux is based on Grub 2. When the backspace is tapped 28 times, the program bypasses any lock system and automatically enters “Grub rescue shell”, allowing the hacker to any almost any function available.

Although, by this method, serious damages can be done on a computer and its system, the bright side is, the hack has to be physically next to the computer in order to hack it.

Currently, Companies which make different versions of Linux- Ubuntu, Red Hat, and Debian released patches to seal the possible security breach.


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