Diamonddavej writes "The BBC reports that software development student Glenn Mangham, a 26-year-old from the UK, was jailed 17 February 2012 for eight months for computer misuse, after he discovered serious Facebook security vulnerabilities. Hacking from his bedroom, Mangham gained access to three of Facebook's servers and was able to download to an external hard drive the social network's 'invaluable' intellectual property (source code). Mangham's defense lawyer, Mr. Ventham, pointed out that Mangham is an 'ethical hacker' and runs a tax registered security company. The court heard Mangham previously breached Yahoo's security, compiled a vulnerability report and passed on to Yahoo. He was paid '$7000 for this achievement,' and claims he was merely trying to repeat the same routine with Facebook. But in passing sentence, Judge Alistair McCreath said despite the fact he did not intend to pass on the information gathered, his actions were not harmless and had 'real consequences and very serious potential consequences' for Facebook. The case's prosecutor, Mr. Patel, said Facebook spent '$200,000 (£126,400) dealing with Mangham's crime.'"