If you use Gmail, check to see if your filters have been hacked.

Gmail is excellent, and even in terms of spam filtering capabilities and functions, it may be the best, but it's not perfect. This may sound like a truism, but in fact, the main reason why Gmail isn't perfect is that it still has quite a few security vulnerabilities. Without mentioning the weak password protection for users and the cumbersome password recovery steps, Gmail has been found to have XSS security vulnerabilities. Simply put, after accidentally visiting certain websites, your Gmail settings might get altered without you even knowing. Don't believe it? The renowned British graphic designer David Airey lost his domain this month due to just such a vulnerability in Gmail.

David Airey is a well-known designer, and much of his business comes directly from his personal website, davidairey.com. Because of this, hackers wanted to hijack his domain and sell it back to him at a high price. So how did the hackers manage to do this? The answer lies in exploiting Gmail's...