Everyone thought it couldn't be done. Most authorities and references you care to consult on the matter actually recommend Primus locks to protect you from bumping. Hell, even i would mention them all the time in my presentations.
Well, as it turns out, you can bump a Schlage Primus lock. It requires a bump key made with a proper sidebar code, but at the lower levels of security these codes aren't totally random. At the "basic" level... it's the same sidebar code nation-wide.
Still, in addition to being a terrific (and fun) proof of concept, we were able to determine a terrific way of preventing nearly all conventional bump key attacks... and that is with the use of new anti-bump pins being developed by ilco.
TOOOL is in no way affiliated with any of these companies and does not speak with final, definitive word on this subject... but for now we're happy with what we've uncovered and plan on researching the matter further. The Schlage Primus is still one of my favorite locks... and with the addition of a couple of new pins (a process that does not require the alteration of any existing component of the lock) we can make them even better!
Thank you to everyone who helps pioneer improved methods of security through research, disclosure, and education.