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1) A very intuitive person who just happens to be able to figure out technology just by playing around with it, usually without any prior experience with said technology. This person is able to figure out any technology, from cell phones, to car stereos, to paper shredders.

2) Never needs instructions on assembly of any new technology and always does it right.
Yogi's such a techack. He's never even used that cell phone before and he's managed to program his own ring.
techack by Clint July 26, 2004
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Telhack was a group of young computer enthusiasts or hackers from Sweden, active in the early 2000's. They released a number of novice tutorials on various hacking- and phreaking related subjects as well as a few security advisories, exploits, trojan horses/RATs and more. Today, Telhack is merely an IRC chatroom located on EFnet.
A few releases: Backdoor.Hatckel, d0ped Trojan, Shambala Server 4.5 (Security Advisory and PoC Exploit), Blackmoon FTP Server 2.6 (Security Advisory), PVote 1.5 (Security Advisory), IcrediBB 1.1 (Security Advisory), Flooder.Win32.TelHack, Bindcheck (BIND-scanner for *nix/*BSD), Cloning with Sim-Pic v 2.4 (Tutorial), Breaking in to Mobiflex (Tutorial), General SS7 Security (Tutorial), Exploiting PHP (Tutorial), UAV_MOPS/Military Radio Warfare (Tutorial).
Telhack by TrackBaq July 31, 2009
Related Words

techjacked 

When a technical support person walks into an office to work on one issue and is then overwhelmed by end users and all their problems they never opened a ticket for.
Boss calls up desktop technician that has been missing for two hours.

Boss: Billy, where have you been?
Billy: I went out on to the floor to install that monitor and 5 other end users came to me with 12 other issues they never opened a ticket for.

Boss: oh Billy, Techjacked again.
techjacked by groovypucks February 7, 2019
That one friend that is always in the keta hole. Like always.
This guy is soo Tschack
Tschack by ceekchr November 22, 2021

techjack 

hey techjack
share bear: tech brat!
techjack by techbrathater May 24, 2024
An Irish phrase meaning shit, derived from ass
(Not to be confused with the literal description of one's buttocks)
"Did you hear the song Aylek$ dropped?"
"Hardly. Her music is absolute cheeks."

"My boyfriend say LaFlame is cheeks."
"Tell your boyfriend I said it's his mixtape that's cheeks."
Cheeks by thecartisan April 26, 2020

sans sheriff 

Lawless use of fonts or typography, with no regard to aesthetics or legibility
I'm putting this CV straight in the bin. Written totally sans sheriff.
sans sheriff by Jamarley July 3, 2019