(Portland, OR) -- The Multnomah County Sheriff's Office is warning about text message scams. These are the messages where someone you don't know asks things like, "Hello," "Can I speak with you?" and "Are you still at work?" If you reply, the scammer knows they have an active phone and will try to gain your trust. Their ultimate goal is to get your personal or financial information. If you don't know the sender, delete the text message.