I've done a search and seen a few threads about the OnGuard Bulldog Mini u-locks, but nothing about security issues. I was wondering if anyone knows of any history of this lock being exploited. my friend was able to open his lock, his roommates lock, and my lock (all the same model I believe). He showed me when we were about to lock up and I had forgot to bring the key to my u-lock.
I emailed OnGuard about it last week, asking if they could possibly replace it or if the issue was at all known or fixed. I haven't yet gotten a response. I'm not sure I put any details on the forum here, but I definitely woulnd't recommend this U-lock to anyone.
I'm posting here because after a search, most of the discussion of this brand of lock occured in the ss/fg forum.