{"id":19993,"date":"2025-09-22T16:24:35","date_gmt":"2025-09-22T20:24:35","guid":{"rendered":"https:\/\/engineering.jhu.edu\/ExecEd\/?post_type=course&#038;p=19993"},"modified":"2026-01-15T10:18:01","modified_gmt":"2026-01-15T15:18:01","slug":"introduction-to-intrusion-systems","status":"publish","type":"course","link":"https:\/\/engineering.jhu.edu\/ExecEd\/course\/introduction-to-intrusion-systems\/","title":{"rendered":"Introduction to Intrusion Detection Systems"},"content":{"rendered":"\n<div class=\"gb-element-2172257a\"><div class=\"gb-container gb-container-01a1e0ed ctn-course-header\">\n\n<div class=\"gb-element-73a7478f\">\n<div class=\"gb-element-b5112b76\">\n<h1 class=\"gb-text gb-text-eb158f27\">Introduction to Intrusion Detection Systems<\/h1>\n\n\n\n<p class=\"gb-text gb-text-3afb3b41\">Start anytime. Learn at your own pace.<\/p>\n\n\n<p class=\"gb-headline gb-headline-2afe6602 gb-headline-text\">Reveal insights, drive decisions, advance your career.\n\n<\/p>\n\n\n<div>\n<div class=\"gb-element-bb841baf\">\n<div class=\"gb-element-8779fc51\"><div class=\"with_frm_style\"><a data-toggle=\"modal\" data-bs-toggle=\"modal\" data-target=\"#frm-modal-0\" data-bs-target=\"#frm-modal-0\" href=\"#\" class=\"btn btn-gold frm_button\">Start Now<\/a><\/div>\n<\/div>\n\n\n\n<div class=\"gb-element-28d9fa88\"><div class=\"with_frm_style\"><a data-toggle=\"modal\" data-bs-toggle=\"modal\" data-target=\"#frm-modal-1\" data-bs-target=\"#frm-modal-1\" href=\"#\" class=\"frm_button btn btn-navy\">Request&nbsp;Info<\/a>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"gb-element-902dd913\">\n<div class=\"gb-element-7d409886\"><figure class=\"gb-block-image gb-block-image-0fd14a54\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/09\/woman-remote-thief-stealing-data-from-company-2025-02-20-05-57-14-utc-300x169.jpg\" class=\"gb-image-0fd14a54\" alt=\"woman on computer doing code\" srcset=\"https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/09\/woman-remote-thief-stealing-data-from-company-2025-02-20-05-57-14-utc-300x169.jpg 300w, https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/09\/woman-remote-thief-stealing-data-from-company-2025-02-20-05-57-14-utc-1024x576.jpg 1024w, https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/09\/woman-remote-thief-stealing-data-from-company-2025-02-20-05-57-14-utc-768x432.jpg 768w, https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/09\/woman-remote-thief-stealing-data-from-company-2025-02-20-05-57-14-utc-1536x864.jpg 1536w, https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/09\/woman-remote-thief-stealing-data-from-company-2025-02-20-05-57-14-utc-2048x1152.jpg 2048w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n<div class=\"gb-container gb-container-a7fce55a\">\n\n<div class=\"gb-element-46e7fc69\">\n<p class=\"gb-text-29da99f3\"><span class=\"gb-shape\"><svg height=\"32px\" id=\"svg2\" version=\"1.1\" viewBox=\"0 0 32 32\" width=\"32px\" xml:space=\"preserve\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g id=\"background\"><rect fill=\"none\" height=\"32\" width=\"32\" x=\"1\" y=\"1\"><\/rect><\/g><g id=\"book_x5F_text\"><g><path d=\"M27.002,1v1.999h-2V5h2v28h-24c0,0-2,0-2-2V4.018c0-0.006-0.001-0.012-0.001-0.018C0.966,2.645,1.808,1.686,2.556,1.354    C3.294,0.992,3.918,1.004,4.002,1H27.002 M3.998,5C4,5,4.002,5,4.002,5h19V2.999h-19C4,3.005,3.97,2.997,3.853,3.018    c-0.115,0.019-0.274,0.06-0.404,0.125C3.196,3.314,3.035,3.353,3.002,4c0.015,0.5,0.134,0.609,0.272,0.743    c0.144,0.126,0.401,0.212,0.579,0.239C3.948,4.999,3.986,5,3.998,5 M5.002,31h20V7h-20V31\"><\/path><\/g><polygon points=\"7,23 7,21 19,21 19,23 7,23\"><\/polygon><polygon points=\"7,15 7,13 23,13 23,15 7,15\"><\/polygon><polygon points=\"7,19 7,17 23,17 23,19 7,19\"><\/polygon><\/g><\/svg><\/span><span class=\"gb-text\"><span>Cybersecurity<\/span><\/span><\/p>\n\n\n\n<p class=\"gb-text-e70b6cca\"><span class=\"gb-shape\"><svg height=\"512\" viewBox=\"0 0 512 512\" width=\"512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><title><\/title><path d=\"M346.65,304.3a136,136,0,0,0-180.71,0,21,21,0,1,0,27.91,31.38,94,94,0,0,1,124.89,0,21,21,0,0,0,27.91-31.4Z\"><\/path><path d=\"M256.28,183.7a221.47,221.47,0,0,0-151.8,59.92,21,21,0,1,0,28.68,30.67,180.28,180.28,0,0,1,246.24,0,21,21,0,1,0,28.68-30.67A221.47,221.47,0,0,0,256.28,183.7Z\"><\/path><path d=\"M462,175.86a309,309,0,0,0-411.44,0,21,21,0,1,0,28,31.29,267,267,0,0,1,355.43,0,21,21,0,0,0,28-31.31Z\"><\/path><circle cx=\"256.28\" cy=\"393.41\" r=\"32\"><\/circle><\/svg><\/span><span class=\"gb-text\"><span>Online Self-Paced<\/span><\/span><\/p>\n\n\n\n<div class=\"gb-element-a1c1979d\">\n\n<\/div>\n<\/div>\n\n\n\n<p class=\"gb-text gb-text-62da73b0\">Instructor: <a href=\"#meet\">Jason Crossland<\/a><\/p>\n\n<\/div><\/div>\n<\/div>\n\n\n\n<ul class=\"gb-element-3b251fe0 no-margin-list\">\n<li class=\"gb-text-9df43b5f\"><span class=\"gb-shape\"><svg aria-hidden=\"true\" role=\"img\" height=\"1em\" width=\"1em\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path fill=\"currentColor\" d=\"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"><\/path><\/svg><\/span><span class=\"gb-text\">Designed and taught by Jason Crossland<\/span><\/li>\n\n\n\n<li class=\"gb-text-8ef0cc7e\"><span class=\"gb-shape\"><svg aria-hidden=\"true\" role=\"img\" height=\"1em\" width=\"1em\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path fill=\"currentColor\" d=\"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"><\/path><\/svg><\/span><span class=\"gb-text\"><strong>LIVE<\/strong> monthly seminars and office hours<\/span><\/li>\n\n\n\n<li class=\"gb-text-5768d35b\"><span class=\"gb-shape\"><svg aria-hidden=\"true\" role=\"img\" height=\"1em\" width=\"1em\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path fill=\"currentColor\" d=\"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"><\/path><\/svg><\/span><span class=\"gb-text\">Engaging learning including video walkthroughs and hands-on activities<\/span><\/li>\n\n\n\n<li class=\"gb-text-4ae8a500\"><span class=\"gb-shape\"><svg aria-hidden=\"true\" role=\"img\" height=\"1em\" width=\"1em\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path fill=\"currentColor\" d=\"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"><\/path><\/svg><\/span><span class=\"gb-text\">Satisfaction guaranteed. <strong>Explore the course with no risk.<\/strong><\/span><\/li>\n\n\n\n<li class=\"gb-text-b938d17a\"><span class=\"gb-shape\"><svg aria-hidden=\"true\" role=\"img\" height=\"1em\" width=\"1em\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path fill=\"currentColor\" d=\"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"><\/path><\/svg><\/span><span class=\"gb-text\"><strong>Save $300<\/strong> with the Certificate vs. buying courses separately<\/span><\/li>\n<\/ul>\n<\/div>\n\n<\/div>\n\n\n<div class=\"grid-course-body gb-element-8a21a8dd\">\n<div class=\"gb-element-6b1128d0\">\n<div>\n<p><strong>Cyberattacks lurk in terabytes of logs and flows until properly tuned intrusion detection systems (IDS) bring them to light. <\/strong><\/p>\n\n\n\n<p>Introduction to Intrusion Systems\u2014the entry point in Johns Hopkins Engineering\u2019s three-course certificate program in intrusion detection\u2014builds the conceptual bedrock you need to spot, understand, and explain those threats.&nbsp;<\/p>\n\n\n\n<p>Created by senior Applied Physics Laboratory engineer Jason Crossland, <strong>the course is designed for learners at all levels and delivers a practical, immersive introduction to intrusion detection systems.<\/strong>&nbsp;You will explore how real-world defenders use the principles of host and network intrusion detection systems to cyber resiliency and operational survivability processes, methods, and techniques.&nbsp;&nbsp;<\/p>\n<\/div>\n\n\n\n<section id=\"powered\">\n<div class=\"gb-element-dd8fa489\">\n<h2 class=\"gb-text gb-text-2d12794a\">Powered by Engineering for Professionals<\/h2>\n\n\n\n<p class=\"gb-text gb-text-bba25b78\">A <strong>Top-Ranked Online Grad Program<\/strong> for Computer Information Technology by U.S. News &amp; World Report<\/p>\n<\/div>\n\n\n\n<div class=\"gb-element-841f388f\">\n<div class=\"gb-element-f87a43e6\">\n<img decoding=\"async\" class=\"gb-media-a4d8b1d0\" src=\"https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/03\/BOP13-GRAD-InfoTech-2025_OL-500.png\"\/>\n<\/div>\n\n\n\n<p class=\"gb-text gb-text-e527ac10\">Johns Hopkins Engineering&#8217;s Executive and Professional Education delivers executive education courses from the same faculty behind Johns Hopkins Engineering for Professionals, a top-ranked online, part-time graduate program in computer information technology. This ranking includes our master&#8217;s programs in computer science, artificial intelligence, cybersecurity, information systems engineering, and data science. <br><\/p>\n<\/div>\n<\/section>\n\n\n\n<div>\n<p class=\"gb-text\">This course follows an industry-standard defensive approach and builds critical skills across the entire defensive cyber lifecycle\u2014from identify and detect to protect, then respond and recover activities. <strong>Through interactive assignments, guided instruction, reflective essays, monthly live seminars, and case studies, you will learn:&nbsp;<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IDS types and components&nbsp;<\/li>\n\n\n\n<li>Risk and threat correlations and dependencies&nbsp;<\/li>\n\n\n\n<li>Host and network IDS and intrusion prevention systems characteristics&nbsp;<\/li>\n\n\n\n<li>Host integrity attack detection&nbsp;<\/li>\n\n\n\n<li>Hardware and side-channel attack description<\/li>\n\n\n\n<li>Static and dynamic malware detection<\/li>\n\n\n\n<li>Signature and anomalies in hosts and network IDS&nbsp;&nbsp;&nbsp;<\/li>\n\n\n\n<li>NetFlow and establishing a baseline&nbsp;<\/li>\n\n\n\n<li>Type I and type II errors&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"gb-text gb-text-69f0e851\">By the end of the course, you will know exactly which IDS architecture to recommend, how to justify it to leadership, and articulate the risk it mitigates\u2014skills prized by SOC analysts, incident responders, systems engineers, and managers who govern security budgets.&nbsp;<\/p>\n<\/div>\n\n\n\n<div class=\"gb-element-49182669\">\n<h2 class=\"gb-text gb-text-76166e86\">Save $300 and Earn the Full Certificate<\/h2>\n\n\n\n<p class=\"gb-text gb-text-b39bbeb5\">Introduction to Intrusion Detection Systems is one of 3 courses in the full<\/p>\n\n\n\n<div><\/div>\n\n\n\n<div class=\"gb-element-00daa09d\">\n<div class=\"gb-element-8775b1c9\">\n<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"232\" class=\"gb-media-6f64b6f9\" src=\"https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/03\/Lifelong-Learning-Sample-Certificate-540x417-1-300x232.png\" title=\"Lifelong-Learning-Sample-Certificate-540x417\" srcset=\"https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/03\/Lifelong-Learning-Sample-Certificate-540x417-1-300x232.png 300w, https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/03\/Lifelong-Learning-Sample-Certificate-540x417-1.png 540w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>\n\n\n\n<p class=\"gb-text gb-text-2f1019d0\"><em>The image is for illustrative purposes only. Actual certificate design subject to change,<\/em><\/p>\n<\/div>\n\n\n\n<div>\n<p class=\"gb-text gb-text-409943b3\">Complete <strong>this course <\/strong>as well as: <\/p>\n\n\n\n<div class=\"gb-query-e5ff6cb3\"><\/div>\n\n\n\n<p class=\"gb-text gb-text-ecccfbf2\"><strong>and the capstone project<\/strong> to earn your Johns Hopkins Certificate of Achievement.<\/p>\n\n\n\n<div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div id=\"guarantee\">\n<h2 class=\"gb-text gb-text-7b94ba07\">No Risk: Satisfaction Guaranteed<\/h2>\n\n\n\n<p class=\"gb-text\">Feel confident in your learning journey! If the certificate content is too advanced, not advanced <em>enough<\/em>, or simply doesn\u2019t meet your expectations, we\u2019ve got you covered with our money-back guarantee. <strong>Just contact our team within 7 days from purchase to receive a full refund\u2014no questions asked.<\/strong><\/p>\n<\/div>\n\n\n\n<div>\n<div class=\"gb-element-f6e8d27a\">\n<h2 class=\"gb-text gb-text-6d2573e8\">Meet Your Instructor<\/h2>\n\n\n\n<h3 class=\"gb-text gb-text-3dad39e4\">Jason Crossland<\/h3>\n\n\n\n<p class=\"gb-text gb-text-05becbb4\"><em>Johns Hopkins University, Johns Hopkins Applied Physics Laboratory<\/em><\/p>\n<\/div>\n\n\n\n<div class=\"gb-element-a8e5c9d4\">\n<div>\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"614\" height=\"613\" src=\"https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/09\/JasonCrossland.jpg\" alt=\"\" class=\"wp-image-23511\" style=\"width:179px;height:auto\" srcset=\"https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/09\/JasonCrossland.jpg 614w, https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/09\/JasonCrossland-300x300.jpg 300w, https:\/\/engineering.jhu.edu\/ExecEd\/wp-content\/uploads\/2025\/09\/JasonCrossland-150x150.jpg 150w\" sizes=\"auto, (max-width: 614px) 100vw, 614px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"gb-element-8ad24d4b\">\n<p><strong>Jason Crossland<\/strong> is a Senior Cybersecurity Engineer at the Johns Hopkins University Applied Physics Laboratory with over 23 years of military and civilian experience in cybersecurity, information assurance, and systems engineering. He specializes in mission-focused cyber defense, incident response, and security program management for classified and unclassified systems.<br><\/p>\n<\/div>\n<\/div>\n\n\n\n<p>Jason has taught for 11 years with the Johns Hopkins Engineering for Professionals program. His teaching approach focuses on making complex concepts accessible and practical, helping students apply theory directly to real-world professional challenges.<\/p>\n\n\n\n<h4 class=\"gb-text gb-text-656c578a\"><strong>Jason is Here to Help!<\/strong><\/h4>\n\n\n\n<p class=\"gb-text\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-contrast-color\">Questions about course content? Looking for insight? <strong>Stop by monthly Zoom office hours<\/strong> to talk with Jason and fellow students about what you&#8217;re learning in the course and applications. <\/mark><\/p>\n<\/div>\n\n\n\n<div>\n<h2 class=\"gb-text gb-text-ae67def5\">Prerequisites <\/h2>\n\n\n\n<p class=\"gb-text\">The Certificate is designed for cybersecurity professionals and experienced students. No prior cybersecurity experience is required.&nbsp;A baseline understanding of cybersecurity concepts will be helpful, but there are <strong>no formal prerequisites<\/strong>.&nbsp;<\/p>\n<\/div>\n\n\n\n<section class=\"gb-element-25940295\" id=\"projects\">\n<h2 class=\"gb-text gb-text-67894b60\">Projects You&#8217;ll Build (With Expert Guidance)<\/h2>\n\n\n\n<p class=\"gb-text gb-text-1f16e57b\">Learners gain practical experience through case studies and reflective assignments that discuss and reinforce the concepts presented in each module.<\/p>\n\n\n\n<ul class=\"gb-element-7545aac0\">\n<li class=\"gb-text gb-text-ea805fd2\"><strong>Tool-comparison briefs<\/strong>: Study open-source HIDS options such as Tripwire and OSSEC, then write short decision memos recommending the right tool for a given mission or budget.&nbsp;<\/li>\n\n\n\n<li class=\"gb-text gb-text-0f5a76d3\"><strong>Insider-threat case study<\/strong>: Using supplied host-event traces, you will learn to pinpoint tell-tale artifacts (unexpected process launches, checksum changes) that flag an internal adversary.&nbsp;<\/li>\n\n\n\n<li class=\"gb-text gb-text-0d927267\"><strong>Host-integrity attack analysis:<\/strong> Experience a guided exercise on BIOS\/TPM and side-channel exploits, learn how hardware-level compromise evades poorly placed IDS controls, and what integrity checks prevent it.&nbsp;<\/li>\n\n\n\n<li class=\"gb-text gb-text-141c7e17\"><strong>Hybrid-IDS architecture walk-through<\/strong>: Explore Suricata and Snort to see how signature and anomaly engines corroborate the same event and enrich context identification.&nbsp;&nbsp;<\/li>\n\n\n\n<li class=\"gb-text gb-text-f1103e77\"><strong>NetFlow baselining drill<\/strong>: Graph flow data and learn to distinguish normal traffic from flash crowd and DDoS precursors.&nbsp;<\/li>\n<\/ul>\n<\/section>\n\n\n\n<div>\n<h2 class=\"gb-text gb-text-a710e533\">Course Delivery and Support<\/h2>\n\n\n\n<p class=\"gb-text gb-text-69e09647\">The courses are delivered entirely online through the industry-leading Canvas Learning Management System. This system is supported by the same instructional design team behind Johns Hopkins&#8217; renowned Engineering for Professionals program, which serves thousands of online graduate students each year. <strong>Upon registration, you will receive an email with instructions to create your Hopkins Canvas account and access the videos, readings, files and quizzes. <\/strong><\/p>\n<\/div>\n<\/div>\n\n\n<div class=\"gb-container gb-container-079cd657\">\n<div class=\"gb-container gb-container-c066abdd\" id=\"sticky\">\n\n<p class=\"gb-text gb-text-e62f233e\"><strong>Introduction to Intrusion Detection Systems<\/strong><\/p>\n\n\n\n<div class=\"gb-element-792e4ae5 sidebar\">\n<div class=\"gb-element-5fa3d6ea\">\n<div class=\"wp-block-button\"> <a href=\"#\" data-bs-toggle=\"modal\" data-bs-target=\"#frm-modal-0\" class=\"wp-block-button__link btn btn-gold cta-btn\">Start Now<\/a> <\/div>\n<\/div>\n\n\n\n<div class=\"gb-element-9d58f917\">\n<div class=\"wp-block-button\"> <a href=\"#\" data-bs-toggle=\"modal\" data-bs-target=\"#frm-modal-1\" class=\"wp-block-button__link btn btn-navy cta-btn\">Request Info<\/a> <\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"gb-element-51b8150b\">\n<div class=\"gb-element-9fd42988\">\n<div class=\"gb-element-19badac3\">\n<p class=\"gb-text-ffbc40b7\"><span class=\"gb-shape\"><svg height=\"32px\" id=\"svg2\" version=\"1.1\" viewBox=\"0 0 32 32\" width=\"32px\" xml:space=\"preserve\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g id=\"background\"><rect fill=\"none\" height=\"32\" width=\"32\" x=\"1\" y=\"1\"><\/rect><\/g><g id=\"book_x5F_text\"><g><path d=\"M27.002,1v1.999h-2V5h2v28h-24c0,0-2,0-2-2V4.018c0-0.006-0.001-0.012-0.001-0.018C0.966,2.645,1.808,1.686,2.556,1.354    C3.294,0.992,3.918,1.004,4.002,1H27.002 M3.998,5C4,5,4.002,5,4.002,5h19V2.999h-19C4,3.005,3.97,2.997,3.853,3.018    c-0.115,0.019-0.274,0.06-0.404,0.125C3.196,3.314,3.035,3.353,3.002,4c0.015,0.5,0.134,0.609,0.272,0.743    c0.144,0.126,0.401,0.212,0.579,0.239C3.948,4.999,3.986,5,3.998,5 M5.002,31h20V7h-20V31\"><\/path><\/g><polygon points=\"7,23 7,21 19,21 19,23 7,23\"><\/polygon><polygon points=\"7,15 7,13 23,13 23,15 7,15\"><\/polygon><polygon points=\"7,19 7,17 23,17 23,19 7,19\"><\/polygon><\/g><\/svg><\/span><span class=\"gb-text\"><span>Cybersecurity<\/span><\/span><\/p>\n\n\n<\/div>\n\n\n\n<p class=\"gb-text-33b6fda5\"><span class=\"gb-shape\"><svg height=\"512\" viewBox=\"0 0 512 512\" width=\"512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><title><\/title><path d=\"M346.65,304.3a136,136,0,0,0-180.71,0,21,21,0,1,0,27.91,31.38,94,94,0,0,1,124.89,0,21,21,0,0,0,27.91-31.4Z\"><\/path><path d=\"M256.28,183.7a221.47,221.47,0,0,0-151.8,59.92,21,21,0,1,0,28.68,30.67,180.28,180.28,0,0,1,246.24,0,21,21,0,1,0,28.68-30.67A221.47,221.47,0,0,0,256.28,183.7Z\"><\/path><path d=\"M462,175.86a309,309,0,0,0-411.44,0,21,21,0,1,0,28,31.29,267,267,0,0,1,355.43,0,21,21,0,0,0,28-31.31Z\"><\/path><circle cx=\"256.28\" cy=\"393.41\" r=\"32\"><\/circle><\/svg><\/span><span class=\"gb-text\"><span>Online Self-Paced<\/span><\/span><\/p>\n\n\n\n<div class=\"gb-element-f592b55f\">\n\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"gb-text gb-text-a4f860ba\"><strong>No Risk: Explore the Certificate for 7 Days<\/strong><\/p>\n\n<\/div>\n<\/div><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Reveal insights, drive decisions, advance your career.<\/p>\n","protected":false},"featured_media":20017,"template":"","format":[48],"meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"company":[],"offering":[44],"class_list":["post-19993","course","type-course","status-publish","has-post-thumbnail","hentry","category-cybersecurity","format-online-self-paced","offering-course"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Introduction to Intrusion Detection Systems - Executive &amp; Professional Education<\/title>\n<meta name=\"description\" content=\"Advance your cybersecurity knowledge with Johns Hopkins\u2019 Introduction to Intrusion Systems\u2014covering detection, response, design &amp; integration. 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