Steganography is the art and science of hiding information by embedding messages within other cover messages or files like images, audio, or video. It comes from Greek words meaning "covered writing" and aims to conceal the very existence of messages to all but the intended recipient. Common steganography techniques include least significant bit encoding, discrete wavelet transforms, masking, and discrete cosine transforms to hide messages in digital files without detectable changes to the cover file. However, confidentiality relies on the algorithms remaining secret, and password leaks or unauthorized access by hackers could enable dangerous uses if the technique falls into the wrong hands.

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2. • It is Art and Science of Writing or Hidding
of Information by Embedding Message
Within a Message.
• Steganography Comes From Greek Word,
• It Means Coverd Or Secret Writing.
STEGAN-O-GRAPHY
COVERD + WRITING

3. • “The goal of steganography is to hide messages in such a way that no one apart
from the intended recipient even knows that a message has been sent.”
• This can be achieve by concealing the existence of information within cover.

4. • Least Significant Bit (LBS).
• Discrete Wavelet Transform
• Masking
• Discrete Cosine Transform

5. • Plain Text
• Cipher Text
• Images
• Audio
• Video Etc.

6. • The confidentiality of information is
maintained by the algorithms, and if
the algorithms are known then this
technique is of no use.
• Password leakage may occur and it
leads to the unauthorized access of
data.
• If this technique is gone in the wrong
hands like hackers can be very much
dangerous for all.
• Difficlt to detect only reciver can
detect.
• It can be done faster with large no. of
softwares.
• Provides better security for sharing
data.