I was playing on Xanandu server when another player dropped several books. When I opened the book
https://i.imgur.com/oPJtgS3.jpg it contained 11 pages of what appeared to be java code. The other players and I began to lag, so I logged out, ran a virus scan, check firewall log ect.. found nothing. I contacted the sever admin TenPlus1 and expressed my concern and gave him/her the location of the book, no response other than finding my account banned the next day. I was unable to get any answer from mods or the server admin in reference to the suspicious book. My question and concern is if it's possible for a skiddie to add their code to minecraft items and use as a exploit, do devs audit the code of mods? I'm not a programmer or very tech savvy, but the entire situation seems very odd to me. I run the 0.4.13 version ,no mods added by me on client side, and have had no other glitches other than when I opened this book. Thanks