The prevalence of online attacks against websites has accelerated quickly in recent years and the same risks continue to be readily exploited. However, these are very often easily identified directly within the browser; it's just a matter of understanding the vulnerable patterns to look for. This course comes at security from the view of the attacker in that their entry point is typically the browser. They have a website they want to probe for security risks â€“ this is how they go about it. This approach is more reflective of the real online threat than reviewing source code is and it empowers developers to begin immediately assessing their applications even when they're running in a live environment without access to the source. After all, that's what online attackers are doing.