Go through here on my commute to work. I have never been taken advantage of but was told not to trust the local taxi drivers. A few tourists have told me of bribes they had to pay police and customs. One friend was jumped in an alley for money years ago. The town has come a long way from the corruption that used to be commonplace. I have never had a negative experience but have benefitted from having local coworkers to show me around. Keep your wits about you.
Learner a in Atyrau in their APIC centre