<story><title>Song from 1989 declared a cybersecurity vulnerability for crashing hard drives</title><url>https://www.techspot.com/news/95671-janet-jackson-song-1989-declared-cybersecurity-vulnerability-crashing.html</url></story><parent_chain><item><author>jmbwell</author><text>Of course, I&amp;#x27;m reminded of Brendan Gregg shouting at hard drives:&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=tDacjrSCeq4&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=tDacjrSCeq4&lt;/a&gt;&lt;p&gt;Hard disk drives are not dissimilar from other high-precision acoustic systems. The actuator is even called a &amp;quot;voice coil.&amp;quot;&lt;p&gt;That we are able to transmit a range of frequencies with sufficient accuracy and precision to induce a magnet to move a near-microscopic coil of wire at the end of armature flying microns above the surface of a platter spinning at a rotational velocity of thousands of RPMs and a linear velocity of inches per millisecond, land at exact locations, and detect the polarity of a magnetic field… I can&amp;#x27;t even. I don&amp;#x27;t even know what to compare it to.</text></item></parent_chain><comment><author>sbierwagen</author><text>A lot of signal processing&amp;#x2F;information theory stuff crosses over pretty seamlessly between hard drives and radio transmission, too: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.schrankmonster.de&amp;#x2F;wp-content&amp;#x2F;uploads&amp;#x2F;2019&amp;#x2F;12&amp;#x2F;Screenshot-at-2019-12-07-12-53-39.png&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.schrankmonster.de&amp;#x2F;wp-content&amp;#x2F;uploads&amp;#x2F;2019&amp;#x2F;12&amp;#x2F;Scr...&lt;/a&gt;&lt;p&gt;The presentation that (deleted) tweet screenshots: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.iaria.org&amp;#x2F;conferences2015&amp;#x2F;filesAICT15&amp;#x2F;AnIntroductionToHDDModellingDetectionAndDecoding.pdf&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.iaria.org&amp;#x2F;conferences2015&amp;#x2F;filesAICT15&amp;#x2F;AnIntroduc...&lt;/a&gt;</text></comment>
<story><title>Song from 1989 declared a cybersecurity vulnerability for crashing hard drives</title><url>https://www.techspot.com/news/95671-janet-jackson-song-1989-declared-cybersecurity-vulnerability-crashing.html</url></story><parent_chain><item><author>jmbwell</author><text>Of course, I&amp;#x27;m reminded of Brendan Gregg shouting at hard drives:&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=tDacjrSCeq4&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=tDacjrSCeq4&lt;/a&gt;&lt;p&gt;Hard disk drives are not dissimilar from other high-precision acoustic systems. The actuator is even called a &amp;quot;voice coil.&amp;quot;&lt;p&gt;That we are able to transmit a range of frequencies with sufficient accuracy and precision to induce a magnet to move a near-microscopic coil of wire at the end of armature flying microns above the surface of a platter spinning at a rotational velocity of thousands of RPMs and a linear velocity of inches per millisecond, land at exact locations, and detect the polarity of a magnetic field… I can&amp;#x27;t even. I don&amp;#x27;t even know what to compare it to.</text></item></parent_chain><comment><author>OedipusRex</author><text>Last time someone posted this he showed up in the comments lol</text></comment>