1.0PC Matic Bloghttps://www.pcmatic.com/blogchengrobhttps://www.pcmatic.com/blog/author/chengrob/rich600338<blockquote class="wp-embedded-content" data-secret="ZoFj0bAiGi"><a href="https://www.pcmatic.com/blog/dirty-spyware-tricks/">Dirty Spyware Tricks</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.pcmatic.com/blog/dirty-spyware-tricks/embed/#?secret=ZoFj0bAiGi" width="600" height="338" title="“Dirty Spyware Tricks” — PC Matic Blog" data-secret="ZoFj0bAiGi" 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://www.pcmatic.com/blog/wp-includes/js/wp-embed.min.js </script> https://www.pcmatic.com/blog/wp-content/uploads/pcmatic-fallback.png19201080If you had a complete knowledge of what most spyware was doing to your system, you would never agree to install it. So how does it end up installed on so many PCs? Here are some of the dirty tricks that spyware uses to worm its way onto your system and stay there. (Not all spyware uses every technique.)