No?

Where did you read that? They're still alive and kicking.

'tptacek left it to start a new company. As far as I can tell, Matasano is quite successful and many of its employees are highly regarded hackers and engineers.

Some of what they do:

    * cryptopals.com
    * microcorruption.com
    * cryptoservices.github.io

See also: the 'whoishiring threads every month.

EDIT: You should probably respond to his post instead of mine.