Alec Baldwin fell victim to Internet pranksters on Monday (27May13) when his Twitter.com account was illegally accessed - for the second time this year (13).

A message promoting diets appeared on the former 30 Rock star's page - and he was less than impressed with the hack, which came just three months after his account was accessed without his permission in February (13).

In a series of posts, he writes, "This f**king hacking weight loss s**t. Gooooooddd!!! Ignore this weight loss trash. I mean, I'm all for weight loss. But Damn!!!"

Baldwin's Twitter drama comes after pop superstar Cher's account on the site was compromised by imposters over the weekend - the Believe hitmaker's page also displayed a message about a diet brand.