1.0JHU Engineering Magazinehttps://engineering.jhu.edu/magazine-archiveYou Can’t Hide (From) Those Pryin’ Eyes - JHU Engineering Magazinerich600338<blockquote class="wp-embedded-content" data-secret="nuySp2vS8f"><a href="https://engineering.jhu.edu/magazine-archive/2014/05/cant-hide-pryin-eyes/">You Can’t Hide (From) Those Pryin’ Eyes</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://engineering.jhu.edu/magazine-archive/2014/05/cant-hide-pryin-eyes/embed/#?secret=nuySp2vS8f" width="600" height="338" title="“You Can’t Hide (From) Those Pryin’ Eyes” — JHU Engineering Magazine" data-secret="nuySp2vS8f" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
/*! This file is auto-generated */
!function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document);
//# sourceURL=https://engineering.jhu.edu/magazine-archive/wp-includes/js/wp-embed.min.js
</script>
https://engineering.jhu.edu/magazine-archive/wp-content/uploads/2014/05/Impact_YouCantHidePryinEyes_thumb.jpg370250Smile! If you’re using a MacBook computer, you might inadvertently find yourself on a version of the classic television show Candid Camera. Computer scientists at the Whiting School have demonstrated how hackers can take over some MacBooks, activating their Web cameras without triggering the built-in green light that warns users that they are in the spotlight....