"Pyra sparked up its popular Blogger.com site again Friday after shutting it down earlier in the day in response to a hacker attack.
The hack compromised individual accounts, locking out site users from their blogs.
Pyra has taken the machine that was compromised offline and restored the Blogger site from its redundant servers, said Jason Shellen, the company's director of business development. Users whose accounts were compromised should be able to access them again, he said. "

Blog site back up after hack attack - Tech News - CNET.com