Google's official blog hacked again?

A very strange post appeared on the official Google Custom Search blog today:

Google Custom Search, this is a wonderful product from Google which many webmasters have been looking for. He / she wants it.
It also helps you to keep track of your custom search engine.
I'll cover it up on my next blog.
Good Luck for all custom search customers (??).
Cheers
Srikanth

Even without paying attention to grammatical errors and typos in the names of Google products, like Ad-sense, the message itself looks ridiculous and completely unofficial. But the most interesting thing was that the rest of the blog entries were deleted !

Now, of course, all deleted records are restored, and written by a hacker (hackers?), On the contrary, deleted.

Google hacking commented as follows:

We accidentally thought we were spam and our susceptible Blogger settings caught us. The Custom Search blog has been restored and we are working to ensure that this does not happen with other Google blogs. Other Blogger users can be confident that this will not happen to them, reporting any problems to the Blogger support team through the Blogger Help Center . We can then figure it out.

Interestingly, if any blog is recognized for spam, then all its previous entries are deleted, and anyone can write new ones? Or does this only happen with official Google blogs?

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Recall that in October last year, one of the official blogs of Google had already been hacked . As now, the last incident was also dryly commented.