Top Web 2.0 Security Vulnerabilities

In many Web 2.0 applications, content is trusted in the hands of many users, not just a select number of authorized personnel. That means there's a greater chance that a less-experienced user will make a change that will negatively affect the overall system. This change in a system's design can also be exploited by hackers who now have access to a greater number of administrative accounts whose passwords can often be easily cracked if the correct security controls are not in place. The systems also may have insufficient brute-force controls, permit clear text passwords, or have been tied together in a single-sign-on environment, making an attack that much riskier.

In my opinion web 2.0 combined with our work-from-anywhere lifestyle has begun to blur the lines between work and private life. Because of this psychological shift, people may inadvertently share information their employer would have considered sensitive. Even if individuals aren't sharing the equivalent of trade secrets, the accumulation of the small non-sensitive items they share can allow a business's competitors to gain intelligence about what's going on and being worked on at that company.