I host about 5 sites now on Dreamhost and am not too worried about info being compromised.
I HAVE noticed that ssh has been brutally slow since the attack, maybe they put extra protocols in place to filter out DDOS IP's, but it takes me about 30 seconds to open a session now which is unworkable for my workflow. I imagine ftp is the same, I dont use it.
Dreamhost has got it rough, they managed to piss off both the far-left hacktivists by briefly allowing white supremacist websites, and ironically they went way out of their way to PROTECT those same far-lefties by denying the DOJ requests.
I think their free-spirited nature is awesome but I hope it doesn't cost me my favorite hosting company.