My ex is using his sons name, date of birth and social security number for himself. All his bank accounts are using his sons personal information. Isn't it forgery when he signs checks drawn on these accounts since it isn't legally his account? If so, then if he writes me a check on these accounts and I know he forged all the information on the check can I legally cash it? My alimony checks are being sent this way and I am not comfortable cashing checks I know are forged. Are there legal charges that can be filed against me if I cash a check I know is forged or not written by the real owner of the account?