nastygram: /nas'tee-gram/ n. 1. A protocol packet or item of email (the latter is also called a {letterbomb}) that takes advantage of misfeatures or security holes on the target system to do untoward things.

:nastygram: /nas'tee-gram/ n. 1. A protocol packet or item of
email (the latter is also called a {letterbomb}) that takes
advantage of misfeatures or security holes on the target system to
do untoward things. 2. Disapproving mail, esp. from a
{net.god}, pursuant to a violation of {netiquette} or a
complaint about failure to correct some mail- or news-transmission
problem. Compare {shitogram}, {mailbomb}. 3. A status
report from an unhappy, and probably picky, customer. "What'd
Corporate say in today's nastygram?" 4. [deprecated] An error
reply by mail from a {daemon}; in particular, a {bounce
message}.
-- The AI Hackers Dictionary

Related:

• nastygram /nas'tee-gram/ n. 1. A protocol packet or item of email (the latter is also called a letterbomb) that takes advantage of misfeatures or security holes on the target system to do untoward things.
  2. Disapproving mail, esp. from a net.god, pursuant...
• mailbomb: (also mail bomb) [USENET] 1. v. To send, or urge others to send,
  massive amounts of {email} to a single system or ...
• letterbomb: 1. n. A piece of {email} containing {live data} intended to do nefarious things to the recipient's machine or terminal.
  It is possible, for example, to send letterbombs that...
• letterbomb 1. n. A piece of email containing live data intended to do nefarious things to the recipient's machine or terminal.
  It used to be possible, for example, to send letterbombs...
• mailbomb (also mail bomb) [Usenet] 1. v. To send,
  or urge others to send, massive amounts of email...
• shitogram: /shit'oh-gram/ n. A *really* nasty piece of email.
  Compare {nastygram}, {flame}. -- The AI Hackers...
• bounce: v. 1. [perhaps by analogy to a bouncing check] An electronic mail message that is undeliverable and returns an error notification to the sender is said to `bounce'.
  See also {bounce message}. 2. [Stanford] To play...
• email: /ee'mayl/ (also written `e-mail') 1. n. Electronic mail automatically passed through computer networks and/or via modems over common-carrier lines.
  Contrast {snail-mail}, {paper-net}, {voice-net}...
• bounce v. 1. [common; perhaps by analogy to a bouncing check] An electronic mail message that is undeliverable and returns an error notification to the sender is said to `bounce'.
  See also bounce message. 2. [Stanford] To play...