In cryptography, a salt is the additional random input that is added to password or passphrase to make the password hash unique. It prevents from the hashed output password to be cracked so easily by the hacker. When you salt your password, the function will be Hash (salt | password), instead of Hash(password).
It is a bullish signal in technical candlestick pattern by comparing two lines of short-term moving average and long-term average. It is a golden cross when the short term moving average broke its long-term moving average.