Re: "an accommodation address"
>That's basically what it was, a small infosec training outfit run out of a home office.
Yes, it is hard to get a handle on just how small "The team of Hacker House" were.
As you suggest it might just have been the co-founders wearing both the owner and employee hats.
No problems with the home office and (typically) using the accountants "accomodation address" for official/public purposes - its what I use.
Biting the hand that feeds IT
