Collaborate Disseminate
If you follow cybersecurity news, you may have heard of the latest Linux exploit referenced under CVE-2016-5195, which has been dubbed Dirty COW. The name is derived based on the exploitation of the copy-on-write (COW) mechanism in Linux.Categories: Cy… Continue reading Mobile Menace Monday: How dare that rootin’ Dirty COW
[ttsiodras] tells an epic tale of getting a custom Debian kernel installed on an Asus MemoPAD (ME103K) tablet. Skipping to the end of the saga, he discovers what looks like serial data coming out on the headphone jack when the system boots, but the signal was so distorted that he couldn’t simply interpret it. The solution turns out to be attaching a level-converter chip.
A level converter is a non-inverting amplifier, usually with a Schmitt trigger for immunity against noise. In this case, it acts like a “binarizer” — outputting a high voltage when the input rises above a threshold, …read more
Continue reading Down the Rabbit Hole and Back Out Again: Serial Over Headphone Jack