Exp/20124681-C is a malicious Java code, which is a component of a DDoS (distributed denial-of-service) attack against Brian Kreb's blog. Exp/20124681-C attacks Internet users who have an old Java version installed on their PCs. Exp/20124681-C exploits the Java vulnerability (CVE=2012-4681) for accessing the targeted computer. If installed successfully, Exp/20124681-C can result in a number of other exploits on the infected computer. Exp/20124681-C mainly proliferates via dangerous websites. If the computer system runs an exposed version of Java and the website is able exploit it, Exp/20124681-C may be distributed onto the affected PC.