if I sign a message with a private key, SHA256, and RIPEMD160 protection lost?

[jubalix]

if I sign a message with a private key is SHA256, and RIPEMD160 protection lost for that address?

[achow101]

Yes. Signing anything will reveal the public key.

[yinoye]

Yes. Signing anything will reveal the public key.

The wallet address which is the public key is revealed..
what of the private key itself..hope it is safe ??

[achow101]

what of the private key itself..hope it is safe ??

The private key is never revealed in signatures. Otherwise Bitcoin wouldn't be secure as signatures are used in transactions.

[TechPriest]

The wallet address which is the public key is revealed..
what of the private key itself..hope it is safe ??

Wallet address it is not the public key by itself. If for a simple it's public key hash.
You may not afraid about private key. Ask yourself: what does signature is by itself? If for a simple it's encrypted hash of private key. You can't reestablish private key through signature.