Never show hackers your weaknesses. And the #1 client-side weakness is…JavaScript! :)

Why is JavaScript Vulnerable?

JavaScript is vulnerable because it is easy for hackers and other threat actors to input query strings into forms to access, steal, or contaminate protected data.

• JavaScript is the standard for the processing of personal information in client-side websites and applications. There are many open-source and third-party libraries available today, the majority of which have known vulnerabilities and are easy for threat actors to infiltrate.
• By default, JavaScript environments do not have a security?permissions model built in. The World Wide Web Consortium standard is that security permissions—what code is able to execute and what types of activities scripts are allowed to do—?are housed in browsers, and the responsibility to manage them lies with the site owner. The onus is on site owners to implement CSP, SRI, & other policies.

The 5 Most Important Things About JavaScript Security

?the companies, security professionals, and web developers need to know about JavaScript security:

1. Client-Side Attacks and JavaScript Code
2. Securing JavaScript
3. JavaScript Security Approaches & Technologies
4. JavaScript Risks and Threats
5. JavaScript Security : Teams and Collaboration

Security Problems: “Includes front-end JavaScript libraries with known security vulnerabilities”

The power of JavaScript is evident across today’s digital landscape. Almost 98% of all websites use JavaScript as the client-side programming language to add interactive behavior to web applications. E-commerce sites depend heavily on JavaScript to support the user experience during the shopping and purchasing process. Banking websites use it to support customer forms and businesses use it for advertising and to track web analytics. Web developers consider JavaScript libraries an important tool to streamline the software development process. However, increasingly, when analyzing web code, developers come across the warning “Includes front-end JavaScript libraries with known security vulnerabilities.” While JavaScript is a crucial component of front-end development, it remains extremely vulnerable to attacks, since it is easy for attackers to manipulate JavaScript code to access, steal, or contaminate data. Unfortunately, JavaScript libraries are a common source for vulnerable and malicious code.