Stalkers come in all shapes, sizes and sexes. They come from all walks of life. Unfortunately, what they don't come with is warning labels. According to the National Center for Victims of Crime, more than 1 million women and more than 370,000 men are victims of stalking every year. One in every 12 women will be stalked in her lifetime. The statistics are scary. When most of us meet someone new, we often give the person the benefit of the doubt, especially when it comes to the dating pool. We don't expect a first date, a random encounter or a blossoming relationship to turn into a stalking nightmare. And while nobody wants to walk around in a paranoid state, it's always a good idea to stay vigilant and keep an eye out for red flags that could signal danger ahead. Many stalkers share these common characteristics: impulsiveness, obsessiveness, selfish, refusal to take no for an answer, being isolated and having low self-esteem.