Emmanuel Goldstein from 2600 Magazine writes, "Volume 4 of The Hacker Digest has been put into PDF format, comprised of issues of 2600 Magazine from 1987."
This was the first year that 2600 adopted the digest format. For the first time ever, a hacker magazine would show up on newsstands and in bookstores around the world. New concepts such as cellular phone fraud and electronic mailboxes for $20 a month were introduced to the public and scrutinized in the pages of 2600, while traditions like the letters section, payphone photos, and 2600 meetings were in their infancy. The hacker spirit from these early issues is remarkably similar to that of today: defiant, curious, and overflowing with data.