From Smashing Magazine: "A few months ago, Anton Isaykin, in collaboration with the company 2comrades, found a huge vulnerability that is quite typical of big projects (we do not name names here). To test it, they obtained the file structures and even the source code of about 3320 Russian websites and some major English-language websites. Serious vulnerabilities like this aren't supposed to exist nowadays. Every serious or visible exploit is found and fixed quickly. But here we will show you something simple and ordinary yet very dangerous."