A browser-delivered exploit chain is a multi-step attack that begins when a victim visits a web page and ends with a deeper compromise if each stage succeeds. The first stage usually targets the browser, its rendering engine, or a related component. Later stages may use the initial code execution to gain more privileges, deploy additional payloads, or reach wider system control.
This matters because the browser is a common trust boundary on desktops and mobile devices. Attackers use it to blend malicious delivery with normal web traffic, making detection harder than with obvious malware files. In real campaigns, the chain may be paired with phishing pages, rotating domains, or fake login screens to draw victims in and keep the operation flexible. Defenders reduce risk with rapid patching, web filtering, browser isolation, telemetry, and strong anti-phishing controls, since breaking any stage can stop the full compromise.