There are lots of security-related things to keep in mind when writing a web application, as the Web is a place full of danger: cross-site scripting (XSS), cross-site request forgery (CSRF), clickjacking, brute forcing, spam and so on.
Go gets many things right by default: for example, templates from the standard library make it hard to accidentally introduce XSS vulnerabilities. But what about other attacks? Fortunately, there are a few open source Go packages