{"id":4309,"date":"2025-04-07T11:52:33","date_gmt":"2025-04-07T19:52:33","guid":{"rendered":"https:\/\/www.antivirusaz.com\/faq\/?post_type=ht_kb&#038;p=4309"},"modified":"2026-02-19T14:00:25","modified_gmt":"2026-02-19T22:00:25","slug":"what-is-a-backdoor-in-cybersecurity","status":"publish","type":"ht_kb","link":"https:\/\/www.antivirusaz.com\/faq\/art\/what-is-a-backdoor-in-cybersecurity\/","title":{"rendered":"What is a backdoor in cybersecurity?"},"content":{"rendered":"<p><a href=\"https:\/\/www.antivirusaz.com\/faq\/wp-content\/uploads\/2025\/04\/backdoor-in-cybersecurity.webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-4950 alignright\" src=\"https:\/\/www.antivirusaz.com\/faq\/wp-content\/uploads\/2025\/04\/backdoor-in-cybersecurity-300x300.webp\" alt=\"Backdoor in cybersecurity\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.antivirusaz.com\/faq\/wp-content\/uploads\/2025\/04\/backdoor-in-cybersecurity-300x300.webp 300w, https:\/\/www.antivirusaz.com\/faq\/wp-content\/uploads\/2025\/04\/backdoor-in-cybersecurity-150x150.webp 150w, https:\/\/www.antivirusaz.com\/faq\/wp-content\/uploads\/2025\/04\/backdoor-in-cybersecurity-768x768.webp 768w, https:\/\/www.antivirusaz.com\/faq\/wp-content\/uploads\/2025\/04\/backdoor-in-cybersecurity-50x50.webp 50w, https:\/\/www.antivirusaz.com\/faq\/wp-content\/uploads\/2025\/04\/backdoor-in-cybersecurity.webp 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>In cybersecurity, a <strong>backdoor<\/strong> is a hidden method of bypassing normal authentication or security controls to gain access to a computer system or network. It can be installed by attackers during a breach or even embedded by developers for maintenance (though that\u2019s risky). Backdoors are often used to maintain persistent access, deploy further <a href=\"\/security-center\/malware.html\">malware<\/a>, or steal data without detection.<\/p>\n<p><strong>Notable examples include:<\/strong><\/p>\n<ul>\n<li><a href=\"\/security-center\/virus-information\/doublepulsar.html\"><strong>DoublePulsar<\/strong><\/a> \u2013 Used in major attacks like WannaCry after being leaked from the NSA.<\/li>\n<li><a href=\"\/security-center\/virus-information\/sunburst.html\"><strong>SUNBURST<\/strong><\/a> \u2013 A backdoor used in the SolarWinds supply chain attack, which compromised multiple U.S. government agencies.<\/li>\n<li><a href=\"\/security-center\/virus-information\/rcsandroid.html\"><strong>RCSAndroid<\/strong><\/a> \u2013 A mobile spyware\/backdoor tied to surveillance software used by government agencies.<\/li>\n<li><a href=\"\/security-center\/virus-information\/finfisher-spyware.html\"><strong>FinFisher (FinSpy)<\/strong><\/a> \u2013 A commercial backdoor used for spying, often sold to law enforcement and intelligence agencies.<\/li>\n<li><a href=\"\/security-center\/virus-information\/shadowpad.html\"><strong>ShadowPad<\/strong><\/a> \u2013 A modular backdoor linked to Chinese threat groups, found hidden in legitimate software updates.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<hr \/>\n<p style=\"text-align: center;\"><strong>Protect yourself from backdoors<br \/>\n<\/strong>Backdoors can stay hidden for months. Add a protective layer with trusted<br \/>\nantivirus + real-time security tools.<\/p>\n<p style=\"text-align: center;\"><a class=\"protective-cta__btn\" href=\"\/antivirus-security-software.html\"><strong>Explore Antivirus &amp; Security Software<\/strong><br \/>\n<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In cybersecurity, a backdoor is a hidden method of bypassing normal authentication or security controls to gain access to a computer system or network. It can be installed by attackers during a breach or even embedded by developers for maintenance (though that\u2019s risky). Backdoors are often used to maintain persistent access, deploy further malware, or [&hellip;]<\/p>\n","protected":false},"author":1,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[12],"ht-kb-tag":[529,531,530,534,535,533,536,532],"class_list":["post-4309","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-threats-vulnerabilities","ht_kb_tag-backdoor","ht_kb_tag-double-pulsar","ht_kb_tag-doublepulsar","ht_kb_tag-finfisher","ht_kb_tag-finspy","ht_kb_tag-rcsandroid","ht_kb_tag-shadowpad","ht_kb_tag-sunburst"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is a Backdoor in Cybersecurity?<\/title>\n<meta name=\"description\" content=\"Learn what a backdoor in cybersecurity is, how hackers use it, and how to detect and prevent backdoor attacks on your devices and network.\" 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