It looks like even credit unions are being hit by the cyber attackers. From the Credit Union Times:
Last week, on Feb. 25, the Cyber Fighters of Izz ad-Din al-Qassam renewed their Distributed Denial of Service attacks against U.S. financial institutions. That included again taking down the websites of two credit unions: the $1.5 billion University FCU in Austin, Texas, and Patelco, the $3.8 billion Pleasanton, Calif., institution.
Unfortunately, this is another expense for credit unions which won't help deposit rates. The article describes some software that credit unions can use to protect against these attacks. It's expensive.