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A keylogger is a spy tool used to capture your keystrokes. The most common keyloggers are software based. There's also hardware keyloggers. A keylogger is a double-edged sword, meaning it can be used for good and bad. It might be used by parents or guardians to monitor their children's internet activity or be used by criminals to steal your passwords, social security numbers, and credit card numbers. Keyloggers might be attached to trojan/viruses. Keyloggers hide and are very hard to detect by a novice. They don't show up in processes. Keyloggers might hook to your keyboard which is the most common way or inject its self deep into the kernel of your operating system which makes it very difficult to detect and remove.
I had all of these charges on my credit card I didn't make. Later I found out that some one installed a keylogger in my computer without me knowing and captured my keystrokes and stole my credit card number.
by Twisted Dreams December 18, 2006
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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(Keystroke logger) Hacking tool / Trojan horse used for stealing passwords or other confidential information. Logs keystrokes and may email the logs to the hacker.
Ph33r m3 I keylog j00r MSN account
by Aku Ankka July 28, 2004
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