You'd think that more readily, of course, if you hadn't seen just this sort of lax, sloppy approach to patches taken before, both by businesses and consumers.
So probably we shouldn't be surprised that, according to new survey research undertaken by Infoblox and The Measurement Factory, 25 percent of the DNS servers that were vulnerable half a year ago still are.
While there's some noise being made about the 75 percent patch rate actually being better than expected,that's clearly a semi-silk purse at best. The sow's ear is the huge number of unpatched machines still out there, still vulnerable, operated by companies that, it seems safe to suppose, just don't care.
Infoblox has a nice collection of technical information related to DNS Best Practices here.