Publicly available and identifiable as you?
If you have genetic markers for various diseases present in your genome potential employers, insurance companies etc. could use this information - most likely for their benefit rather than for the benefit of the individual so I'd class this as a big potential risk that should be considered.
Some other risks/benefits based on perspective:
Your genome matches with something on a criminal database for a crime you've committed in the past and you get caught.
Your genome leads to a partial match on a criminal database for crime committed by a blood relative. They get caught
You happen to be a good genetic match for someone who needs body parts and isn't adverse to using yours without asking permission.