Only to big stuff, still not so much to small stuff.
Small stuff was probably more at risk during the lowest part of the solar cycle last year when the solar wind was consistently weak and did not push back against cosmic rays from outside the solar system. In theory if such a ray hit a a critical memory bit, it could flip it from 0 to 1 or 1 to 0, but the chances of that are small considering most cosmic rays probably pass completely thru the earth without hitting a single atom.
